| 1/1 | January 19841984年1月 | Unknown | | Q3162150 |
| 1/1 | Deaths in January 1984訃報 1984年1月 | Unknown | | Q109356093 |
| 1/1 | Vienna New Year's Concert 1984ウィーンフィル・ニューイヤーコンサート1984 | Unknown | | Q28105640 |
| 1/1 | 1983–84 Four Hills Tournament | Unknown | | Q827307 |
| 1/1 | 1983 Emperor's Cup FinalJapan第63回天皇杯全日本サッカー選手権大会・決勝 | Japan | Place: Tokyo | Q54817696 |
| 1/7 | Spellemannprisen 1983 | Norway | Place: Oslo Concert Hall | Q12002226 |
| 1/8 | Chunnakam Police station massacre | Sri Lanka | Place: Chunnakam | Q15928007 |
| 1/9 | January 9, 19841984年1月9日 | Unknown | | Q25387037 |
| 1/10 | 1984 Danish general election | Denmark, Kingdom of Denmark | | Q3777517 |
| 1/10 | 1984 Balkan Bulgarian Tupolev Tu-134 crash | Bulgaria | Place: People's Republic of Bulgaria | Q4581582 |
| 1/12 | 1984 Algerian presidential election | Algeria | | Q3586508 |
| 1/14 | 1984 Cameroonian presidential election | Cameroon | | Q5026491 |
| 1/14 | Ray Mancini vs. Bobby Chacon | United States | Place: Lawlor Events Center | Q110877937 |
| 1/25 | 1984 State of the Union Address | United States | | Q4581882 |
| 1/26 | 1984 Gibraltar general election1984年ジブラルタル議会総選挙 | United Kingdom | | Q16838987 |
| 1/28 | 41st Golden Globe Awards第41回ゴールデングローブ賞 | Unknown | Place: The Beverly Hilton | Q2290224 |
| 1/28 | Aeroflot Flight 928 | Unknown | Place: Izhevsk Airport | Q16662341 |
| 1/29 | 1984 NBA All-Star Game | Canada | Place: McNichols Sports Arena | Q2330300 |
| 1/29 | 1984 Ecuadorian presidential election | Ecuador | | Q54153247 |
| 1/29 | 1984 Republican Party presidential primaries | United States | | Q7314683 |
| 2/1 | Norway at the 1984 Winter Olympics1984年サラエボオリンピックのノルウェー選手団 | Norway | | Q549776 |
| 2/1 | Battle of the Marshes沼沢地の戦い | Iraq | Place: Hawizeh Marshes | Q1788937 |
| 2/1 | February 19841984年2月 | Unknown | | Q3092762 |
| 2/1 | figure skating at the 1984 Winter Olympics – men | Socialist Federal Republic of Yugoslavia | Place: Zetra Olympic Hall | Q4892856 |
| 2/1 | figure skating at the 1984 Winter Olympics – pairs | Socialist Federal Republic of Yugoslavia | Place: Zetra Olympic Hall | Q4902407 |
| 2/1 | figure skating at the 1984 Winter Olympics – ice dance | Socialist Federal Republic of Yugoslavia | Place: Zetra Olympic Hall | Q7339245 |
| 2/1 | Deaths in February 1984訃報 1984年2月 | Unknown | | Q109356094 |
| 2/1 | 1984 Rossija Tournament | Soviet Union | | Q14850787 |
| 2/3 | Cruzeiro do Sul Flight 302 | Brazil | | Q10392499 |
| 2/4 | 1984 24 Hours of Daytona | United States | Place: Daytona International Speedway | Q104864872 |
| 2/6 | February 6 Intifada | Unknown | Place: West Beirut | Q85760704 |
| 2/7 | Grand Prix d'Ouverture La Marseillaise 1984 | France | | Q30346752 |
| 2/7 | February 7, 19841984年2月7日 | Unknown | | Q69295931 |
| 2/10 | Wagalla massacre | Kenya | Place: Wagalla Airstrip | Q7959475 |
| 2/11 | February 11, 19841984年2月11日 | Unknown | | Q69295936 |
| 2/12 | 1984 Haitian parliamentary election | Haiti | | Q5639760 |
| 2/18 | Concordat of Villa Madama | Vatican City, Italy | | Q3604182 |
| 2/26 | 1984 Basque regional election1984年バスク自治州議会選挙 | Spain | | Q3751851 |
| 2/28 | Scandinavian Airlines System Flight 901 | Unknown | | Q48742715 |
| 2/29 | 1984 Hohenthurm rail accident | East Germany | | Q77260260 |
| 3/1 | March 19841984年3月 | Unknown | | Q3294919 |
| 3/1 | Deaths in March 1984訃報 1984年3月 | Unknown | | Q109356095 |
| 3/1 | 1984 Kvalserien | Sweden | | Q10550822 |
| 3/3 | 9th César Awards第9回セザール賞 | France | Place: Théâtre de l'Empire | Q664926 |
| 3/3 | 1984 Omloop Het Volk | Belgium | | Q54430384 |
| 3/4 | 1984 Soviet Union legislative election第11期ソビエト連邦最高会議代議員選挙 | Soviet Union | | Q4128599 |
| 3/7 | Festival RTP da Canção 1984 | Portugal | | Q10281919 |
| 3/7 | Ashdod bus 9 bombing | Israel | Place: Ashdod | Q115860693 |
| 3/9 | 1984 Anguillan general election | Anguilla | | Q20313119 |
| 3/10 | 36th Directors Guild of America Awards第36回全米監督協会賞 | United States | | Q55602782 |
| 3/11 | March 11, 19841984年3月11日 | Unknown | | Q47468596 |
| 3/14 | Nationaal Songfestival 1984 | Netherlands | | Q2490268 |
| 3/15 | 10th People's Choice Awards | United States | | Q24905572 |
| 3/16 | Nkomati Accordンコマチ協定 | Unknown | Place: Komatipoort | Q1301424 |
| 3/18 | 19th Golden Bell Awards | Taiwan | Place: National Dr. Sun Yat-sen Memorial Hall | Q18118949 |
| 3/21 | 1984 Taiwan presidential election1984年中華民国総統選挙 | Taiwan | Place: Chung-Shan Building | Q10843969 |
| 3/21 | 5th Genie Awards第5回ジニー賞 | Canada | Place: Royal Alexandra Theatre | Q2817842 |
| 3/22 | Pacific Western Airlines Flight 501パシフィック・ウエスタン航空501便火災事故 | Canada | Place: Calgary International Airport | Q7122768 |
| 3/22 | 1984 Dwars door Vlaanderen | Belgium | | Q50820507 |
| 3/22 | Pasaia ambush | Spain | Place: Pasai Donibane | Q6348464 |
| 3/24 | 11th Saturn Awards第11回サターン賞 | United States | Place: California | Q2226396 |
| 3/24 | 1984 E3 Harelbeke | Belgium | | Q30141657 |
| 3/25 | consecration of Russia to the Immaculate Heart of the Blessed Virgin Mary | Italy | Place: Saint Peter's Square | Q5162784 |
| 3/25 | 1984 Baden-Württemberg state election | Germany | | Q1804045 |
| 3/25 | 1984 IAAF World Cross Country Championships – senior men's race | United States | Place: Meadowlands Racetrack | Q17166021 |
| 3/25 | 1984 Salvadoran presidential election | El Salvador | | Q7406542 |
| 3/25 | 1984 Turkish local elections | Turkey | | Q7855369 |
| 3/25 | March 1984 Scottish League Cup Final | Unknown | Place: Hampden Park | Q4484664 |
| 3/25 | 1984 Brabantse Pijl | Belgium | | Q55601193 |
| 3/27 | El Sexto prison mutiny | Peru | Place: El Sexto prison | Q65391593 |
| 3/28 | Chunnakam market massacre | Sri Lanka | Place: Chunnakam | Q16258280 |
| 3/28 | 1984 Carolinas tornado outbreak | United States | | Q4581620 |
| 3/30 | 1984 Syrian coup attempt | Syria | | Q133569461 |
| 3/31 | 1984 Guinea-Bissau legislative election | Guinea-Bissau | | Q5616454 |
| 4/1 | April 19841984年4月 | Unknown | | Q13080429 |
| 4/1 | Deaths in April 1984訃報 1984年4月 | Unknown | | Q109356096 |
| 4/1 | 1984 Sweden Cup | Sweden | | Q1469944 |
| 4/1 | death of Marvin Gaye | United States | Place: West Adams | Q5247494 |
| 4/1 | 1984 500 km of SuzukaJapan | Japan | Place: Suzuka | Q92159375 |
| 4/3 | 1984 Guinean coup d'état1984年ギニアクーデター | Guinea | Place: Conakry | Q60750351 |
| 4/3 | Miss Teen USA 1984 | United States | | Q6877480 |
| 4/6 | 1984 Cameroonian coup attempt | Cameroon | Place: Yaoundé | Q4581613 |
| 4/6 | Cocos (Keeling) Islands status referendum, 1984 | Australia | | Q19872377 |
| 4/7 | Melodi Grand Prix 1984 | Norway | Place: Chateau Neuf | Q107589524 |
| 4/8 | 4th Golden Raspberry Awards第4回ゴールデンラズベリー賞 | United States | Place: Los Angeles | Q1535168 |
| 4/9 | 56th Academy Awards第56回アカデミー賞 | United States | Place: Los Angeles | Q47193 |
| 4/13 | Operation Meghdootメドゥート作戦 | India, Pakistan | Place: Siachen Glacier | Q3445917 |
| 4/13 | Bus 300 affair | Israel | | Q2031150 |
| 4/13 | 1984 London Marathonロンドン・マラソン1984 | United Kingdom | Place: London | Q2787253 |
| 4/14 | 1984 Nations motorcycle Grand Prix | Italy | | Q3774791 |
| 4/15 | 1984 Iranian legislative election | Iran | | Q4454652 |
| 4/15 | Palm Sunday Massacre | United States | Place: East New York | Q17084693 |
| 4/16 | 1984 Boston Marathonボストン・マラソン1984 | United States | Place: Boston | Q2296219 |
| 4/17 | Murder of Yvonne Fletcherイヴォンヌ・フレッチャー殺害事件 | United Kingdom | Place: London | Q107258217 |
| 4/17 | 1984 Antiguan general election | Antigua and Barbuda | | Q4774830 |
| 4/20 | Good Friday Massacre | Canada | Place: Montreal Forum | Q2890835 |
| 4/20 | 1984 London Heathrow Airport bombing | Unknown | Place: Heathrow Terminal 2 | Q4581728 |
| 4/24 | 1984 Paris–Camembert | France | | Q28747409 |
| 4/24 | 1984 Morgan Hill earthquake | United States | | Q4581761 |
| 4/25 | 1984 Grand Prix de Denain | France | | Q21008451 |
| 4/25 | 1984 Mizoram Legislative Assembly election | India | | Q107694791 |
| 4/26 | 1984 Pan American Judo Championships | Mexico | Place: Mexico City | Q25407183 |
| 4/29 | 1984 Catalan regional election1984年カタルーニャ自治州議会選挙 | Spain | | Q8774389 |
| 5/1 | May 19841984年5月 | Unknown | | Q13072293 |
| 5/1 | Deaths in May 1984訃報 1984年5月 | Unknown | | Q109356097 |
| 5/1 | 1984 DFB-Pokal semi-finals | Germany | Place: Mönchengladbach | Q1153169 |
| 5/1 | 1984 Taça de Portugal Final | Portugal | Place: Estádio Nacional | Q16851669 |
| 5/3 | Alfortville Armenian Genocide Memorial Bombing | France | | Q4722163 |
| 5/6 | 1984 Spanish motorcycle Grand Prix | Spain | | Q6541163 |
| 5/6 | 1984 Züri-Metzgete | Switzerland | | Q3854040 |
| 5/6 | 1984 Ecuadorian presidential election | Ecuador | | Q54153247 |
| 5/6 | May 6, 19841984年5月6日 | Unknown | | Q21684794 |
| 5/6 | 1984 Panamanian general election | Panama | | Q7129986 |
| 5/7 | 1984 Tongan general election | Tonga | | Q7821020 |
| 5/8 | 1984 National Assembly shooting | Canada | Place: Quebec City | Q16964667 |
| 5/11 | 1984 Coupe de France Final | France | Place: Parc des Princes | Q4581649 |
| 5/14 | 1984 Philippine parliamentary election | Philippines | | Q7185366 |
| 5/15 | May 1984 lunar eclipse1984年5月15日の月食 | Unknown | | Q6796299 |
| 5/17 | 1984 Bhiwandi riot | India | Place: Bhiwandi | Q4581588 |
| 5/17 | Miss USA 1984ミスUSA1984 | United States | | Q6877708 |
| 5/17 | Severomorsk Disaster | Unknown | | Q20744158 |
| 5/19 | 1984 Scottish Cup Final | United Kingdom | Place: Hampden Park | Q4581855 |
| 5/19 | 1984 Pontins Professional | Wales | Place: プレスタティン | Q48812894 |
| 5/20 | 1984 Austrian motorcycle Grand Prix | Austria | | Q23878470 |
| 5/22 | May 22, 19841984年5月22日 | Unknown | | Q56321331 |
| 5/22 | 1984 Cupa României Final | Romania | Place: Stadionul Național | Q96363792 |
| 5/23 | 1984 West German presidential election | Germany | | Q896226 |
| 5/23 | Abbeystead disaster | United Kingdom | Place: Abbeystead | Q4664116 |
| 5/24 | 1984 Campeonato Nacional finals | Argentina | Place: Monumental Stadium, Buenos Aires | Q140357475 |
| 5/24 | May 24, 19841984年5月24日 | Unknown | | Q28133605 |
| 5/27 | 1984 German motorcycle Grand Prix | Germany | | Q23901109 |
| 5/27 | 1984 Egyptian parliamentary election | Egypt | | Q2053604 |
| 5/28 | 1984 Costa Rican census | Costa Rica | Place: Costa Rica | Q5760530 |
| 5/30 | solar eclipse of May 30, 19841984年5月30日の日食 | Unknown | | Q618333 |
| 5/30 | La Penca bombingラ・ペンカ爆破事件 | Nicaragua | | Q6464356 |
| 5/31 | Bhushanchhara massacre | Bangladesh | | Q117805749 |
| 6/1 | 1984 European Parliament election1984年欧州議会議員選挙 | European Economic Community | | Q1376075 |
| 6/1 | June 19841984年6月 | Unknown | | Q3188255 |
| 6/1 | Deaths in June 1984訃報 1984年6月 | Unknown | | Q109356098 |
| 6/1 | murder of Mark Tildesley | United Kingdom | Place: Wokingham | Q20687390 |
| 6/2 | 4th Golden Rooster Awards | People's Republic of China | Place: Jinan | Q16959366 |
| 6/5 | Action of June 5, 1984 | Saudi Arabia | Place: Arabi Island | Q16117647 |
| 6/6 | 1984 Greenlandic general election | Greenland, Denmark | | Q15410697 |
| 6/8 | Operation Blue Starブルースター作戦 | India | | Q1987713 |
| 6/10 | 1984 Beninese parliamentary election | Benin | | Q4888039 |
| 6/11 | 1984 French motorcycle Grand Prix | France | | Q3114427 |
| 6/13 | June 1984 lunar eclipse1984年6月13日の月食 | Unknown | | Q6312033 |
| 6/14 | 1984 European Parliament election in the United Kingdom1984年欧州議会議員選挙 | United Kingdom | | Q2052512 |
| 6/14 | 1984 European Parliament election in Denmark | Greenland, Denmark | | Q3722233 |
| 6/14 | 1984 European Parliament election in the Netherlands | Netherlands | | Q7349166 |
| 6/14 | 1984 European Parliament election in Ireland | Ireland | | Q2320038 |
| 6/14 | Ninth Amendment of the Constitution of Ireland | Ireland | Place: Ireland | Q3147018 |
| 6/16 | 29th David di Donatello Awards第29回ダヴィッド・ディ・ドナテッロ賞 | Italy | Place: Teatro dell'Opera di Roma | Q3703417 |
| 6/17 | 1984 European Parliament election in West Germany1984年欧州議会議員選挙 | West Germany | | Q1376092 |
| 6/17 | 1984 European Parliament election in France1984年欧州議会議員選挙 (フランス) | France | | Q2562267 |
| 6/17 | 1984 European Parliament election in Belgium | Belgium | | Q612788 |
| 6/17 | 1984 European Parliament election in Greece | Greece | | Q692416 |
| 6/17 | 1984 European Parliament election in Italy1984年欧州議会議員選挙 (イタリア) | Italy | | Q11867 |
| 6/17 | 1984 European Parliament election in Luxembourg | Luxembourg | | Q727754 |
| 6/17 | 1984 Luxembourg general election | Luxembourg | | Q3247583 |
| 6/17 | 1984 European Parliament election in Greenland | Denmark | | Q30603544 |
| 6/17 | 1984 Yugoslavian motorcycle Grand Prix | Yugoslavia | | Q6587699 |
| 6/18 | Battle of Orgreaveオーグリーヴの戦い | United Kingdom | Place: Orgreave | Q15197384 |
| 6/19 | 1984 NBA Draft1984年のNBAドラフト | United States | | Q1537366 |
| 6/20 | 1984 Svenska Cupen Final | Sweden | Place: Olympia | Q4581889 |
| 6/21 | Fronleichnamsflut | Germany | | Q26877623 |
| 6/24 | 1984 Sardinian regional election | Italy | | Q511233 |
| 6/24 | June 24, 19841984年6月24日 | Unknown | | Q30755222 |
| 6/24 | 1984 Dominican Republic earthquake | Unknown | | Q4581663 |
| 6/26 | June 26, 19841984年6月26日 | Unknown | | Q21684795 |
| 6/28 | 1984 TAM – Transportes Aéreos Regionais Bandeirante accident | Brazil | | Q19574757 |
| 6/30 | 1984 Dutch TT | Netherlands | | Q24038941 |
| 6/30 | 1984 Bolivian coup attempt | Bolivia | | Q126885694 |
| 7/1 | Liechtenstein women's suffrage referendum, 1984 | Liechtenstein | | Q6544056 |
| 7/1 | July 19841984年7月 | Unknown | | Q13066044 |
| 7/1 | Deaths in July 1984訃報 1984年7月 | Unknown | | Q109356099 |
| 7/1 | 1984 Swedish Open | Sweden | Place: Båstad Tennis Stadium | Q14374124 |
| 7/1 | 1984 New Caledonian legislative election | France | | Q3587576 |
| 7/1 | 1984 Guatemalan Constitutional Assembly election | Guatemala | | Q5390600 |
| 7/3 | 1984 Liberian constitutional referendum | Liberia | | Q6541203 |
| 7/4 | Dikko affair | United Kingdom | | Q5276543 |
| 7/5 | 1984 Indian Airlines Airbus A300 hijacking | India | Place: Srinagar International Airport | Q55601198 |
| 7/8 | 1984 Belgian motorcycle Grand Prix | Belgium | | Q3774732 |
| 7/9 | Miss Universe 1984ミス・ユニバース1984 | Unknown | Place: Knight International Center | Q276797 |
| 7/10 | 1984 Major League Baseball All-Star Game1984年のMLBオールスターゲーム | United States | Place: Candlestick Park | Q3298354 |
| 7/14 | 1984 New Zealand general election1984年ニュージーランド総選挙 | New Zealand | | Q17055253 |
| 7/14 | Divača train disaster | Yugoslavia | | Q2625067 |
| 7/18 | San Ysidro McDonald's massacreサン・イシドロ・マクドナルド銃乱射事件 | United States | Place: San Ysidro | Q473896 |
| 7/19 | 1984 Llŷn Peninsula earthquake | United Kingdom | Place: United Kingdom | Q4581731 |
| 7/23 | 1984 Israeli legislative election | Israel | | Q2917025 |
| 7/23 | The Brawl to End It All | United States | Place: Madison Square Garden | Q7719895 |
| 7/25 | 1984 Vincentian general election | Saint Vincent and the Grenadines | | Q7932164 |
| 7/25 | 1984 Saint Kitts and Nevis general election | Saint Kitts and Nevis | | Q7401615 |
| 7/29 | 1984 Zairean presidential election | Zaire | | Q2115072 |
| 7/29 | Aeropostal Flight 252 | Venezuela | Place: Caribbean Sea | Q55031054 |
| 7/29 | swimming at the 1984 Summer Olympics – men's 200 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q16992924 |
| 7/29 | swimming at the 1984 Summer Olympics – men's 100 metre breaststroke | Unknown | Place: Uytengsu Aquatics Center | Q7656633 |
| 7/29 | swimming at the 1984 Summer Olympics – women's 100 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q7656658 |
| 7/29 | swimming at the 1984 Summer Olympics – women's 400 metre individual medley | Unknown | Place: Uytengsu Aquatics Center | Q7656668 |
| 7/30 | swimming at the 1984 Summer Olympics – women's 200 metre breaststroke | United States | Place: Uytengsu Aquatics Center | Q16952199 |
| 7/30 | swimming at the 1984 Summer Olympics – women's 200 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q7656662 |
| 7/31 | swimming at the 1984 Summer Olympics – men's 100 metre freestyle | United States | Place: Uytengsu Aquatics Center | Q7656637 |
| 7/31 | 1984 Scheldeprijs | Belgium | | Q55601204 |
| 7/31 | swimming at the 1984 Summer Olympics – men's 200 metre backstroke | Unknown | Place: Uytengsu Aquatics Center | Q7656639 |
| 7/31 | swimming at the 1984 Summer Olympics – women's 100 metre backstroke | Unknown | Place: Uytengsu Aquatics Center | Q7656653 |
| 7/31 | swimming at the 1984 Summer Olympics – women's 400 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q7656665 |
| 7/31 | swimming at the 1984 Summer Olympics – women's 4 × 100 metre freestyle relay | Unknown | Place: Uytengsu Aquatics Center | Q7656670 |
| 8/1 | August 19841984年8月 | Unknown | | Q13080502 |
| 8/1 | Deaths in August 1984訃報 1984年8月 | Unknown | | Q109356100 |
| 8/1 | gymnastics at the 1984 Summer Olympics – women's artistic team all-around | United States | Place: Pauley Pavilion | Q1254168 |
| 8/1 | 1984 Mundialito | Italy | Place: Jesolo | Q3327802 |
| 8/1 | 1984 Australian Masters | Australia | Place: Parramatta | Q48816980 |
| 8/1 | 1985 Australian Masters | Australia | Place: Sydney | Q48816983 |
| 8/1 | 1984 Canadian Professional Championship | Canada | Place: Toronto | Q55137493 |
| 8/2 | Vieques Air Link Flight 901A | United States | | Q7928392 |
| 8/2 | Meenambakkam bomb blast | India | | Q6807621 |
| 8/2 | swimming at the 1984 Summer Olympics – men's 400 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q7656647 |
| 8/2 | swimming at the 1984 Summer Olympics – women's 100 metre breaststroke | Unknown | Place: Uytengsu Aquatics Center | Q7656655 |
| 8/2 | swimming at the 1984 Summer Olympics – women's 100 metre butterfly | Unknown | Place: Uytengsu Aquatics Center | Q7656657 |
| 8/3 | Naval Club Pact | Unknown | | Q9054188 |
| 8/3 | swimming at the 1984 Summer Olympics – men's 100 metre backstroke | Unknown | Place: Uytengsu Aquatics Center | Q7656631 |
| 8/3 | swimming at the 1984 Summer Olympics – women's 200 metre individual medley | Unknown | Place: Uytengsu Aquatics Center | Q7656667 |
| 8/3 | swimming at the 1984 Summer Olympics – women's 4 × 100 metre medley relay | Unknown | Place: Uytengsu Aquatics Center | Q7656672 |
| 8/3 | swimming at the 1984 Summer Olympics – women's 800 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q7656673 |
| 8/4 | swimming at the 1984 Summer Olympics – men's 1500 metre freestyle | Unknown | Place: Uytengsu Aquatics Center | Q7656635 |
| 8/4 | swimming at the 1984 Summer Olympics – women's 200 metre backstroke | Unknown | Place: Uytengsu Aquatics Center | Q7656659 |
| 8/4 | swimming at the 1984 Summer Olympics – women's 200 metre butterfly | Unknown | Place: Uytengsu Aquatics Center | Q7656664 |
| 8/5 | 1984 Biman Bangladesh Airlines Fokker F27 crash | Bangladesh | | Q18088261 |
| 8/5 | 1984 British motorcycle Grand Prix | United Kingdom | | Q24203633 |
| 8/5 | 1984 1000 km of Mosport | Canada | Place: Canadian Tire Motorsport Park | Q4581523 |
| 8/6 | killing of Moshe Tamam | Israel | | Q123475018 |
| 8/9 | August 9, 19841984年8月9日 | Unknown | | Q28133650 |
| 8/11 | We begin bombing in five minutes我々は5分以内に爆撃を開始する | United States | | Q1380261 |
| 8/11 | 1984 Swedish motorcycle Grand Prix | Sweden | | Q24229400 |
| 8/12 | 1984 Heilbronn rail accident | Germany | | Q2691517 |
| 8/13 | Arabic–African Union Treaty | Morocco, Great Socialist People's Libyan Arab Jamahiriya | Place: Oujda | Q12243725 |
| 8/15 | 1984 PKK attacks | Turkey | Place: Şemdinli | Q4581824 |
| 8/22 | 1984 South African general election1984年南アフリカ総選挙 | South Africa | | Q2490395 |
| 8/22 | 1984 Indian vice-presidential election | India | | Q24952299 |
| 8/27 | murder of Brian Bishop | United Kingdom | | Q6937812 |
| 8/27 | Arson attack in Duisburg-Wanheimerort 1984 | Germany | Place: Wanheimerort | Q79455355 |
| 8/30 | Cameroon Airlines Flight 786カメルーン航空786便火災事故 | Cameroon | Place: Douala International Airport | Q5026436 |
| 8/31 | 1984 Burundian presidential election | Burundi | | Q5001007 |
| 8/31 | Moroccan Arabic–African Union Treaty referendum, 1984 | Morocco | | Q6913092 |
| 9/1 | Category:September 1984Category:1984年9月 | Unknown | | Q21281019 |
| 9/1 | September 19841984年9月 | Unknown | | Q16676414 |
| 9/1 | Category:September 1984 by country | Unknown | | Q83480031 |
| 9/1 | Deaths in September 1984訃報 1984年9月 | Unknown | | Q109356101 |
| 9/1 | Category:September 1984 in Europe | Unknown | | Q30618449 |
| 9/1 | Category:September 1984 by continent | Unknown | | Q30618451 |
| 9/1 | Category:September 1984 in Asia | Unknown | | Q63184588 |
| 9/1 | Category:September 1984 in the United States | Unknown | | Q83480016 |
| 9/1 | Category:September 1984 in North America | Unknown | | Q83480024 |
| 9/1 | Category:September 1984 in Canada | Unknown | | Q86803070 |
| 9/1 | Category:September 1984 in sports | Unknown | | Q30613788 |
| 9/1 | Category:September 1984 in Oceania | Unknown | | Q105512871 |
| 9/1 | Category:September 1984 in Australia | Unknown | | Q106227160 |
| 9/1 | 1984 African Shooting Championships | Tunisia | Place: Tunis | Q115485149 |
| 9/1 | Category:September 1984 in the Soviet Union | Unknown | | Q131327668 |
| 9/1 | Category:September 1984 in Japan | Unknown | | Q131893101 |
| 9/1 | Category:September 1984 sports events in Europe | Unknown | | Q57838510 |
| 9/1 | Category:September 1984 sports events in the United States | Unknown | | Q83480003 |
| 9/1 | Category:September 1984 sports events in North America | Unknown | | Q83480009 |
| 9/1 | Category:September 1984 in the United Kingdom | Unknown | | Q86803075 |
| 9/2 | 1984 San Marino motorcycle Grand Prix | San Marino | | Q6976864 |
| 9/2 | 1984 1000 km of Spa | Belgium | Place: Spa-Francochamps Circuit | Q4581528 |
| 9/2 | 大阪火炎瓶大量発射事件Japan | Japan | | Q11441526 |
| 9/2 | Milperra massacre | Australia | Place: Milperra | Q14934902 |
| 9/3 | 1984 Montreal bombing | Canada | Place: Montreal Central Station | Q21428273 |
| 9/4 | 1984 Canadian federal election1984年カナダ総選挙 | Canada | | Q1125968 |
| 9/4 | Palauan Compact of Free Association referendum, 1984 | Palau | | Q7126875 |
| 9/7 | C23 tragedy | Unknown | | Q55606298 |
| 9/8 | 1984 Botswana general election | Botswana | | Q15630228 |
| 9/12 | Tanjung Priok massacre | Indonesia | Place: Tanjung Priok | Q7683431 |
| 9/13 | Twenty-first government of Israel第21次 | Israel | | Q5824067 |
| 9/14 | 1984 Nagano earthquakeJapan長野県西部地震 | Japan | | Q8193276 |
| 9/14 | 1984 Moroccan general election1984年の議会選挙 | Morocco | | Q3587210 |
| 9/14 | 1984 South African presidential election | South Africa | | Q16684559 |
| 9/16 | 1984 Grote Prijs Jef Scherens | Belgium | | Q18613171 |
| 9/16 | Pomnik katastrofy lotniczej 1984.09.16 | Poland | | Q11737203 |
| 9/16 | 1984 Point Pedro massacre | Sri Lanka | Place: Point Pedro | Q19881462 |
| 9/16 | 1984 1000 km of Imola | Italy | Place: Imola | Q92002725 |
| 9/18 | Aeroservicios Ecuatorianos Flight 767-103AECA 767-103便離陸失敗事故 | Ecuador | Place: Old Mariscal Sucre International Airport | Q16960383 |
| 9/19 | arson attack on the headquarters of the Liberal Democratic PartyJapan自由民主党本部放火襲撃事件 | Japan | Place: Liberal Democratic Hall Bldg | Q11612961 |
| 9/19 | Masacre de Tazón | Venezuela | | Q44473946 |
| 9/20 | 1984 US embassy bombing in Beirut | Unknown | Place: Beirut | Q16146777 |
| 9/20 | 1984 Sohmor massacre | Lebanon | Place: Sohmor | Q106764062 |
| 9/21 | September 21, 19841984年9月21日 | Unknown | | Q64861021 |
| 9/22 | François Mitterrand and Helmut Kohl holding hands in Douaumont | France | Place: Douaumont ossuary | Q3393278 |
| 9/22 | September 22, 19841984年9月22日 | Unknown | | Q64861178 |
| 9/30 | 1984 Berlin Marathonベルリン・マラソン1984 | Germany | Place: Berlin | Q1968290 |
| 9/30 | 1984 Comorian presidential election | Comoros | | Q3586528 |
| 9/30 | 1984 1000 km of FujiJapan | Japan | Place: Oyama | Q92159272 |
| 10/1 | October 19841984年10月 | Unknown | | Q16667787 |
| 10/1 | Deaths in October 1984訃報 1984年10月 | Unknown | | Q109356102 |
| 10/1 | 1984 Skate Canada International1984年スケートカナダ | Canada | Place: Victoria | Q3486177 |
| 10/7 | 1984 Paris-Tours | France | | Q41755427 |
| 10/10 | 1984 Rajneeshee bioterror attackシーラ・シルバーマンによるバイオテロ | United States | Place: The Dalles | Q2869905 |
| 10/10 | October 10, 19841984年10月10日 | Unknown | | Q56558653 |
| 10/11 | Aeroflot Flight 3352アエロフロート航空3352便事故 | Russia | Place: Omsk | Q2375420 |
| 10/12 | Brighton hotel bombingブライトンホテル爆破事件 | United Kingdom | Place: Brighton | Q891856 |
| 10/19 | Assassination of Father Jerzy Popiełuszko | Polish People's Republic | Place: Włocławek | Q28055289 |
| 10/20 | 1984 Iraqi parliamentary election | Iraq | | Q6068164 |
| 10/20 | Sinking of the Spanish trawler Sonia | Ireland | | Q106372191 |
| 10/21 | 1984 Vorarlberg state election | Austria | | Q1804226 |
| 10/21 | 1984 Chicago Marathonシカゴ・マラソン1984 | United States | Place: Chicago | Q2368392 |
| 10/21 | October 21, 19841984年10月21日 | Unknown | | Q30059140 |
| 10/22 | 1984 United Nations Security Council election1984年国連安保理 非常任理事国選挙 | United Nations | | Q7888926 |
| 10/26 | YOGTZE caseYOGTZE事件 | West Germany | Place: Hagen | Q2598680 |
| 10/28 | 1984 New York City Marathonアメリカ合衆国、ニューヨークで開催したマラソン大会 | United States | Place: New York City | Q2286978 |
| 10/28 | October 1984 Scottish League Cup Final | Unknown | Place: Hampden Park | Q4484667 |
| 10/30 | Miss International 1984ミス・インターナショナル1984 | Unknown | Place: Kanagawa Kenmin Hall | Q3859091 |
| 10/31 | assassination of Indira Gandhiインディラ・ガンディー暗殺事件 | India | Place: New Delhi | Q3347903 |
| 11/1 | November 19841984年11月 | Unknown | | Q13068515 |
| 11/1 | Deaths in November 1984訃報 1984年11月 | Unknown | | Q109356103 |
| 11/1 | 1984 NHK TrophyJapan1984年NHK杯国際フィギュアスケート競技大会 | Japan | Place: Yoyogi National Gymnasium | Q248305 |
| 11/1 | R. v. Guerinゲラン対女王 | Canada | | Q7274225 |
| 11/1 | 1984 Blue Swords | East Germany | Place: Chemnitz | Q29048730 |
| 11/1 | Brussels Agreement, 1984 | United Kingdom, Spain | | Q4979780 |
| 11/2 | Hondh-Chillar massacre | India | | Q5892853 |
| 11/3 | 1984 anti-Sikh riots1984年反シク教徒暴動 | India | Place: Delhi | Q3504310 |
| 11/4 | 1984 Nicaraguan general election | Nicaragua | | Q7024484 |
| 11/6 | 1984 United States presidential election1984年アメリカ合衆国大統領選挙 | United States | | Q699744 |
| 11/6 | 1984 United States Senate elections1984年アメリカ合衆国上院議員選挙 | United States | | Q4348012 |
| 11/6 | 1984 United States presidential election in the District of Columbiaコロンビア特別区の1984年アメリカ合衆国大統領選挙 | United States | | Q24965378 |
| 11/6 | 1984 United States Senate election in Delawareデラウェア州における1984年アメリカ合衆国上院選挙 | United States | | Q7891455 |
| 11/6 | 1984 United States presidential election in Californiaカリフォルニア州の1984年アメリカ合衆国大統領選挙 | United States | | Q7892710 |
| 11/6 | 1984 United States presidential election in Arkansasアーカンソー州の1984年アメリカ合衆国大統領選挙 | United States | | Q17002364 |
| 11/6 | 1984 United States presidential election in Michiganミシガン州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100542 |
| 11/6 | 1984 United States presidential election in Texasテキサス州の1984年アメリカ合衆国大統領選挙 | United States | | Q17101056 |
| 11/6 | 1984 Nova Scotia general election | Canada | | Q3586365 |
| 11/6 | 1984 Puerto Rican general election | United States | | Q7258637 |
| 11/6 | 1984 United States House of Representatives elections1984年アメリカ合衆国下院議員選挙 | United States | | Q7890193 |
| 11/6 | 1984 United States elections | United States | | Q7892448 |
| 11/6 | 1984 United States presidential election in New Hampshireニューハンプシャー州の1984年アメリカ合衆国大統領選挙 | United States | | Q16155911 |
| 11/6 | 1984 United States presidential election in Connecticutコネチカット州の1984年アメリカ合衆国大統領選挙 | United States | | Q16959311 |
| 11/6 | 1984 United States presidential election in Alabamaアラバマ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17001977 |
| 11/6 | 1984 United States presidential election in Virginiaバージニア州の1984年アメリカ合衆国大統領選挙 | United States | | Q17016835 |
| 11/6 | 1984 United States presidential election in Washington (state)ワシントン州の1984年アメリカ合衆国大統領選挙 | United States | | Q17016860 |
| 11/6 | 1984 United States presidential election in Wisconsinウィスコンシン州の1984年アメリカ合衆国大統領選挙 | United States | | Q17016885 |
| 11/6 | 1984 United States Senate election in Rhode Islandロードアイランド州の1984年アメリカ合衆国上院議員選挙 | United States | | Q17016920 |
| 11/6 | 1984 United States presidential election in Floridaフロリダ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100362 |
| 11/6 | 1984 United States presidential election in Hawaiiハワイ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100366 |
| 11/6 | 1984 United States presidential election in Illinoisイリノイ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100386 |
| 11/6 | 1984 United States presidential election in Kentuckyケンタッキー州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100410 |
| 11/6 | 1984 United States presidential election in Massachusettsマサチューセッツ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100537 |
| 11/6 | 1984 United States presidential election in Mississippiミシシッピ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100561 |
| 11/6 | 1984 United States presidential election in Montanaモンタナ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100592 |
| 11/6 | 1984 United States presidential election in New Jerseyニュージャージー州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100719 |
| 11/6 | 1984 United States presidential election in Ohioオハイオ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100903 |
| 11/6 | 1984 United States presidential election in Oklahomaオクラホマ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100913 |
| 11/6 | 1984 United States presidential election in Oregonオレゴン州の1984年アメリカ合衆国大統領選挙 | United States | | Q17100923 |
| 11/6 | 1984 United States presidential election in Iowaアイオワ州の1984年アメリカ合衆国大統領選挙 | United States | | Q17108645 |
| 11/6 | 1984 Arkansas gubernatorial election1984年アーカンソー州知事選挙 | United States | | Q4791912 |
| 11/6 | 1984 United States Senate election in Kentuckyケンタッキー州の1984年アメリカ合衆国上院議員選挙 | United States | | Q7891564 |
| 11/6 | 1984 United States Senate election in Massachusettsマサチューセッツ州の1984年アメリカ合衆国上院議員選挙 | United States | | Q7891628 |
| 11/6 | 1984 United States Senate election in Nebraskaネブラスカ州の1984年アメリカ合衆国上院議員選挙 | United States | | Q7891706 |
| 11/6 | 1984 United States Senate election in Tennesseeテネシー州の1984年アメリカ合衆国上院議員選挙 | United States | | Q7892033 |
| 11/6 | 1984 United States presidential election in Marylandメリーランド州の1984年アメリカ合衆国大統領選挙 | United States | | Q7892828 |
| 11/6 | 1984 United States presidential election in Minnesotaミネソタ州の1984年アメリカ合衆国大統領選挙 | United States | | Q7892850 |
| 11/6 | 1984 United States presidential election in Missouriミズーリ州の1984年アメリカ合衆国大統領選挙 | United States | | Q7892874 |
| 11/6 | 1984 United States presidential election in New Yorkニューヨーク州の1984年アメリカ合衆国大統領選挙 | United States | | Q7892955 |
| 11/6 | 1984 United States presidential election in Pennsylvaniaペンシルベニア州の1984年アメリカ合衆国大統領選挙 | United States | | Q7893061 |
| 11/8 | 1984 Faroese general election | Denmark, Faroe Islands | | Q5436108 |
| 11/8 | Karageçit massacre | Turkey | Place: Karageçit | Q113536753 |
| 11/8 | November 1984 lunar eclipse1984年11月8日の月食 | Unknown | | Q7064678 |
| 11/11 | 1984 Châteaubriant shooting | France | Place: Châteaubriant | Q56310337 |
| 11/17 | 1984 Northern Sumatra earthquake | Indonesia | | Q4581804 |
| 11/18 | 21st Golden Horse Film Awards第21回金馬奨 | Taiwan | Place: National Dr. Sun Yat-sen Memorial Hall | Q15901856 |
| 11/18 | 1984 Australian Grand Prix1984年オーストラリアグランプリ | Australia | Place: Calder Park Raceway | Q4581572 |
| 11/19 | San Juanico disasterサン・フアン・イスアテペク爆発事故 | Mexico | Place: San Juan Ixhuatepec | Q1629818 |
| 11/22 | solar eclipse of November 22, 19841984年11月22日の日食 | Unknown | | Q7556583 |
| 11/22 | 1984 New York City Subway shooting | United States | Place: New York City | Q100520438 |
| 11/22 | Protocol 7 to the European Convention on Human Rights | Unknown | | Q11140100 |
| 11/22 | Council of Civil Service Unions v Minister for the Civil Service行政機構組合評議会対行政機構担当大臣 | United Kingdom | | Q5176381 |
| 11/23 | 1984 DMZ incident | Unknown | Place: Korean Demilitarized Zone | Q83853341 |
| 11/23 | Oxford Circus fire | Unknown | | Q7115275 |
| 11/24 | trial of Arne Cheyenne Johnson「悪魔が私に殺させた」事件 | United States | | Q3922392 |
| 11/25 | 1984 Uruguayan general election | Uruguay | | Q609200 |
| 11/25 | Argentine Beagle conflict dispute resolution referendum, 1984 | Argentina | Place: Argentina | Q4789379 |
| 11/25 | 1984 Japan CupJapan第4回ジャパンカップ | Japan | Place: Tokyo Racecourse | Q11601268 |
| 11/25 | Battle of Hausa (1984) | Morocco | Place: Haouza | Q56306635 |
| 11/28 | 1984 United Nations Security Council election1984年国連安保理 非常任理事国選挙 | United Nations | | Q7888926 |
| 11/29 | Treaty of Peace and Friendship of 1984 between Chile and Argentina1984年チリ・アルゼンチン平和友好条約 | Argentina | Place: Beagle Channel | Q1455864 |
| 11/30 | 1984 Palauan general election | Palau | | Q7126895 |
| 11/30 | killing of David Wilkieデイヴィッド・ウィルキー | Unknown | | Q6407795 |
| 12/1 | Controlled Impact Demonstration制御された衝撃実演 | United States | Place: Rogers Dry Lake | Q1129214 |
| 12/1 | December 19841984年12月 | Unknown | | Q13067916 |
| 12/1 | Deaths in December 1984訃報 1984年12月 | Unknown | | Q109356104 |
| 12/1 | 1984 Australian federal election | Australia | | Q3586903 |
| 12/1 | 1984–85 Four Hills Tournament | Unknown | | Q827573 |
| 12/1 | Occupation of the Hainburger Au | Austria | Place: Stopfenreuther Au | Q829823 |
| 12/1 | 1984 Indian general election in Kerala | India | | Q104859330 |
| 12/1 | 1984 Izvestia Trophy | Soviet Union | | Q11722769 |
| 12/1 | Kokilai massacre | Sri Lanka | | Q6426635 |
| 12/2 | Cheddikulam massacre | Sri Lanka | Place: Cheddikulam | Q16257849 |
| 12/2 | 1984 Tbilisi gas explosion | Soviet Union | Place: Tbilisi | Q4581900 |
| 12/2 | 6th Youth in Film Awards | United States | Place: Hollywood | Q4642832 |
| 12/3 | Bhopal disasterボパール化学工場事故 | India | Place: Bhopal | Q129029 |
| 12/3 | 1984 Grenadian general election | Grenada | | Q5607420 |
| 12/4 | Aeroflot Flight 637 | Unknown | Place: Kostroma–Sokerkino Airport | Q19909685 |
| 12/4 | 1984 Mannar massacre | Sri Lanka | Place: Mannar | Q4581738 |
| 12/4 | 1984 Indian general election in Tamil Nadu | India | | Q6022486 |
| 12/4 | Eccles rail crash | United Kingdom | Place: Eccles | Q5332212 |
| 12/4 | 1984 Indian general election in Andhra Pradesh | India | | Q6022295 |
| 12/6 | PBA Flight 1039 | United States | | Q7118386 |
| 12/12 | 1984 Mauritanian coup d'état | Mauritania | Place: Nouakchott | Q63111212 |
| 12/14 | 1984 Belizean general election | Belize | | Q4883007 |
| 12/15 | Murder of Traci Hammerberg | United States | | Q75189134 |
| 12/18 | 1984 United Nations Security Council election1984年国連安保理 非常任理事国選挙 | United Nations | | Q7888926 |
| 12/19 | Sino-British Joint Declaration英中共同声明 | United Kingdom, People's Republic of China | | Q671479 |
| 12/19 | Pakistani Islamisation programme referendum, 1984 | Pakistan | | Q4393810 |
| 12/20 | murder of Jonelle Matthews | United States | Place: Greeley | Q66791584 |
| 12/20 | Summit Tunnel fire | United Kingdom | Place: Summit Tunnel | Q7637906 |
| 12/22 | Bernhard Goetz | Unknown | | Q714892 |
| 12/22 | 1984 Singaporean general election1984年シンガポール通常選挙 | Singapore | | Q7523295 |
| 12/22 | 1983 Guinea earthquake | Guinea | | Q5941396 |
| 12/23 | Aeroflot Flight 3519アエロフロート航空3519便墜落事故 | Unknown | Place: Krasnoyarsk International Airport | Q15961958 |
| 12/23 | Train 904 bombing | Italy | Place: San Benedetto Val di Sambro | Q2869959 |
| 12/23 | 29th Arima KinenJapan第29回有馬記念 | Japan | Place: Nakayama Racecourse | Q11600745 |
| 12/24 | 1984 Indian general election1984年インド総選挙 | India | | Q3532183 |
| 12/24 | 1984 Tamil Nadu Legislative Assembly election | India | | Q7681373 |
| 12/26 | Killing of Türkan Feyzullah | Bulgaria | | Q85975743 |
| 12/27 | 1984 Goa, Daman and Diu Legislative Assembly election | India | | Q110130645 |
| 12/27 | 1984 Manipur Legislative Assembly election | India | | Q109546719 |
| 12/31 | 1984 Somali parliamentary election | Somalia | | Q2053551 |