| 1/1 | January 19811981年1月 | Unknown | | Q6155723 |
| 1/1 | 1981 European Allround Speed Skating Championships for ladies | Netherlands | Place: Thialf | Q1962473 |
| 1/1 | Deaths in January 1981訃報 1981年1月 | Unknown | | Q109356131 |
| 1/1 | 1981 enlargement of the European Communities | Greece | | Q2824360 |
| 1/1 | Vienna New Year's Concert 1981ウィーンフィル・ニューイヤーコンサート1981 | Unknown | | Q28105636 |
| 1/1 | Final offensive of 1981 (El Salvador) | El Salvador | | Q2889093 |
| 1/1 | Zhdanovskaya Station murder | Soviet Union | Place: Vykhino | Q4468629 |
| 1/2 | January 2, 19811981年1月2日 | Unknown | | Q18384569 |
| 1/8 | Trans-en-Provence Case | France | Place: Trans-en-Provence | Q375409 |
| 1/15 | Crosswords murder | East Germany | Place: Halle-Neustadt | Q1788482 |
| 1/16 | Jimmy Carter's Fourth State of the Union Address | United States | | Q19077010 |
| 1/18 | New Cross house fire | United Kingdom | | Q6518597 |
| 1/19 | Algiers Accordsアルジェ合意 | Unknown | Place: Algiers | Q2388694 |
| 1/19 | 1981 Irian Jaya earthquake | Indonesia | | Q4579858 |
| 1/20 | first inauguration of Ronald Reagan1981年ロナルド・レーガン大統領就任式 | United States | Place: United States Capitol | Q3401697 |
| 1/20 | January 1981 lunar eclipse1981年1月20日の月食 | Unknown | | Q6155721 |
| 1/24 | 1981 Dawu earthquake | Unknown | | Q4579801 |
| 1/24 | Créteil Congress | France | | Q2993065 |
| 1/25 | Laingsburg flood | South Africa | | Q20614722 |
| 1/28 | Convention for the Protection of Individuals with regard to Automatic Processing of Personal Data | Unknown | | Q2996334 |
| 1/30 | American Music Awards of 1981 | United States | | Q4744504 |
| 1/31 | 38th Golden Globe Awards第38回ゴールデングローブ賞 | Unknown | Place: The Beverly Hilton | Q2539157 |
| 1/31 | 6th César Awards第6回セザール賞 | France | Place: Palais des congrès de Paris | Q18959 |
| 2/1 | February 19811981年2月 | Unknown | | Q5439769 |
| 2/1 | Siege of Aleppoアレッポ攻囲戦 | Syria | Place: Aleppo | Q7509799 |
| 2/1 | 1981 NBA All-Star Game | Canada | Place: Coliseum at Richfield | Q947300 |
| 2/1 | Deaths in February 1981訃報 1981年2月 | Unknown | | Q109356134 |
| 2/1 | Piersonstraat riots | Netherlands | | Q2022340 |
| 2/2 | 1981 Grand Prix La Marseillaise | France | | Q30346706 |
| 2/4 | solar eclipse of February 4, 19811981年2月4日の日食 | Unknown | | Q7556333 |
| 2/5 | Operation Soap | Canada | Place: Canada | Q4120079 |
| 2/7 | 1981 Pushkin Tu-104 crash1981年ソ連海軍Tu-104墜落事故 | Soviet Union | Place: Pushkin Airport | Q4055760 |
| 2/7 | Spellemannprisen 1980 | Norway | Place: Chateau Neuf | Q12002223 |
| 2/8 | Karaiskakis Stadium disasterカライスカキス・スタジアムの惨事 | Greece | Place: Karaiskakis Stadium | Q3556846 |
| 2/11 | February 11, 19811981年2月11日 | Unknown | | Q28133531 |
| 2/12 | 1981 Heiss Island Il-14 crash | Unknown | Place: Soviet Union | Q16662438 |
| 2/12 | Funeral and burial of Frederica of Hanover | Kingdom of Greece | Place: Tatoi Royal Cemetery | Q120491786 |
| 2/13 | Louisville sewer explosions | United States | Place: Louisville | Q6689579 |
| 2/15 | 1981 Daytona 500 | United States | Place: Daytona International Speedway | Q4579798 |
| 2/18 | February 1981 Ronald Reagan speech to a joint session of Congress | United States | Place: United States Capitol | Q123938411 |
| 2/18 | February 18, 19811981年2月18日 | Unknown | | Q64852961 |
| 2/22 | Hadelandsdrapene | Norway | Place: Hadeland | Q11973613 |
| 2/23 | 1981 Spanish coup d'état attempt23-F | Spain | Place: Madrid | Q215337 |
| 2/23 | 1981 Kuwaiti general election | Kuwait | | Q6449002 |
| 2/24 | 1981 Gulf of Corinth earthquakes | Greece | | Q5941784 |
| 2/25 | 1981 South Korean presidential election1981年大韓民国大統領選挙 | South Korea | | Q334647 |
| 2/28 | 1981 Omloop Het Volk | Belgium | | Q54430317 |
| 3/1 | Specified local linesJapan特定地方交通線 | Japan | | Q11570876 |
| 3/1 | March 19811981年3月 | Unknown | | Q6756741 |
| 3/1 | Deaths in March 1981訃報 1981年3月 | Unknown | | Q109356132 |
| 3/1 | Pitcairn Islands airfield referendum, 1981 | British Overseas Territories | | Q7198643 |
| 3/2 | 1981 Pakistan International Airlines hijacking | Unknown | | Q4579941 |
| 3/2 | murder of Imette St. Guillen | United States | | Q6937876 |
| 3/3 | 1981 Burlington mayoral election | United States | | Q48971390 |
| 3/4 | France–Saint Lucia Delimitation Agreement | France | Place: Paris | Q26265670 |
| 3/5 | 1981 North Korean local elections | North Korea | | Q15975392 |
| 3/5 | 1981 Hong Kong municipal election | United Kingdom | | Q5895576 |
| 3/7 | Melodi Grand Prix 1981 | Norway | Place: NRK Marienlyst | Q107589154 |
| 3/7 | Festival RTP da Canção 1981 | Portugal | Place: Maria Matos Theatre | Q10281916 |
| 3/8 | 7th People's Choice Awards | United States | | Q24207165 |
| 3/8 | Brandsen rail disaster | Argentina | Place: Brandsen | Q2876263 |
| 3/8 | March 8, 19811981年3月8日 | Unknown | | Q28133648 |
| 3/11 | Constitution of Chile | Chile | | Q1784770 |
| 3/12 | 2nd Genie Awards第2回ジニー賞 | Canada | Place: Royal Alexandra Theatre | Q2815875 |
| 3/14 | 33rd Directors Guild of America Awards第33回全米監督協会賞 | United States | Place: The Beverly Hilton | Q55602766 |
| 3/15 | 1981 Central African presidential election1981年中央アフリカ共和国大統領選挙 | Central African Republic | | Q5060293 |
| 3/16 | 1981 Mauritanian coup d'état attempt | Mauritania | Place: Nouakchott | Q96363715 |
| 3/16 | March 16, 19811981年3月16日 | Unknown | | Q69294703 |
| 3/19 | Bydgoszcz political provocation | Poland | Place: Bydgoszcz | Q5003997 |
| 3/19 | 1981 Ontario general election | Canada | | Q7094974 |
| 3/21 | lynching of Michael Donald | United States | Place: Mobile | Q106577603 |
| 3/22 | 1981 Argentine motorcycle Grand Prix | Argentina | | Q16561675 |
| 3/22 | March 22, 19811981年3月22日 | Unknown | | Q69294709 |
| 3/25 | 1981 South Korean legislative election第11代総選挙 | South Korea | | Q625660 |
| 3/26 | LOT Flight 691 | Polish People's Republic | | Q11737194 |
| 3/28 | Garuda Indonesia Flight 206ガルーダ航空206便ハイジャック事件 | Indonesia | | Q5524467 |
| 3/28 | 1981 E3 Harelbeke | Belgium | Place: Harelbeke | Q18058458 |
| 3/28 | 1981 Sabah state election | Sabah | | Q60825963 |
| 3/29 | 1981 London Marathonロンドン・マラソン1981 | United Kingdom | Place: London | Q3483043 |
| 3/29 | 1981 Dwars door Vlaanderen | Belgium | | Q50820504 |
| 3/30 | attempted assassination of Ronald Reaganレーガン大統領暗殺未遂事件 | United States | Place: Washington Hilton | Q757979 |
| 3/30 | Women strike | Netherlands | | Q26203760 |
| 3/31 | 53rd Academy Awards第53回アカデミー賞 | United States | Place: Dorothy Chandler Pavilion | Q767355 |
| 3/31 | 1st Golden Raspberry Awards第1回ゴールデンラズベリー賞 | United States | Place: Los Angeles | Q669866 |
| 4/1 | Keddie Murdersケディ殺人事件 | United States | Place: Keddie | Q2945772 |
| 4/1 | April 19811981年4月 | Unknown | | Q2874560 |
| 4/1 | 1981 Hama massacreハマー虐殺 (1981年) | Syria | Place: Hama | Q4579833 |
| 4/1 | Garuda Indonesia Flight 206ガルーダ航空206便ハイジャック事件 | Indonesia | | Q5524467 |
| 4/1 | 1981 Thai military rebellion | Thailand | | Q13012468 |
| 4/1 | Deaths in April 1981訃報 1981年4月 | Unknown | | Q109356133 |
| 4/1 | 1981 Copa del Rey de Baloncesto | Spain | Place: Almería | Q80414156 |
| 4/4 | Attack on H3 | Iraq | Place: Iraq | Q1765847 |
| 4/5 | Mitenand Initiative | Switzerland | | Q225622 |
| 4/9 | April 1981 Fermanagh and South Tyrone by-election | United Kingdom | | Q5444368 |
| 4/13 | 1981 Quebec general election | Canada | | Q507416 |
| 4/14 | April 14, 19811981年4月14日 | Unknown | | Q30058674 |
| 4/16 | April 16, 19811981年4月16日 | Unknown | | Q51779588 |
| 4/17 | 1981 La Flèche Wallonneフレッシュ・ワロンヌ1981 | Belgium | | Q4548926 |
| 4/20 | 1981 Boston Marathonボストン・マラソン1981 | United States | Place: Boston | Q2137085 |
| 4/21 | 1981 Grand Prix de Denain | France | | Q21008448 |
| 4/21 | 1981 Paris–Camembert | France | | Q28747425 |
| 4/22 | murder of Marcia King | United States | Place: Troy | Q122802688 |
| 4/26 | 1981 French presidential election1981年フランス大統領選挙 | France | | Q930869 |
| 4/26 | 1981 Austrian motorcycle Grand Prix | Austria | | Q21092650 |
| 4/26 | 1981 Vietnamese legislative election | Vietnam | | Q7928658 |
| 4/27 | Operation Red Dogレッドドッグ作戦 | Dominica | | Q2743454 |
| 4/28 | April 28, 19811981年4月28日 | Unknown | | Q69294750 |
| 4/29 | 1981 South African general election | South Africa | | Q2391250 |
| 4/30 | Riocentro attack | Brazil | Place: Riocentro | Q16495052 |
| 4/30 | Koninginnedag 1981 | Netherlands | | Q18286088 |
| 5/1 | May 19811981年5月 | Unknown | | Q3277968 |
| 5/1 | 1981 Cambodian general election | Cambodia | | Q5025191 |
| 5/1 | Deaths in May 1981訃報 1981年5月 | Unknown | | Q109356136 |
| 5/1 | 1981 Tongan general election | Tonga | | Q7821019 |
| 5/2 | 1981 DFB-Pokal Final | Germany | Place: MHPArena | Q28154342 |
| 5/2 | Aer Lingus Flight 164エアリンガス164便ハイジャック事件 | Unknown | | Q3809581 |
| 5/3 | 1981 Züri-Metzgete | Switzerland | | Q3854037 |
| 5/7 | Austral Líneas Aéreas Flight 901アウストラル航空901便墜落事故 | Argentina | Place: Río de la Plata | Q4823384 |
| 5/9 | 1981 Nepalese Rastriya Panchayat election | Nepal | | Q6994484 |
| 5/9 | 1981 Amsterdam Marathon | Unknown | | Q2774311 |
| 5/10 | 1981 French presidential election1981年フランス大統領選挙 | France | | Q930869 |
| 5/10 | 1981 West Berlin state election | Germany | | Q2539343 |
| 5/10 | Almería Case | Spain | Place: Castillo de Casas Viejas, Almería | Q8342043 |
| 5/10 | 1981 Nations motorcycle Grand Prix | Italy | | Q13527754 |
| 5/10 | Liechtenstein constitutional referendum, 1981 | Liechtenstein | | Q6543967 |
| 5/10 | May 10, 19811981年5月10日 | Unknown | | Q2546825 |
| 5/11 | May 11, 19811981年5月11日 | Unknown | | Q13360012 |
| 5/12 | 1981 Scottish Cup Final | United Kingdom | Place: Hampden Park | Q4579977 |
| 5/13 | attempted assassination of Pope John Paul IIヨハネ・パウロ2世暗殺未遂事件 | Vatican City | Place: Saint Peter's Square | Q2472593 |
| 5/14 | 慶山列車追突事故 | South Korea | | Q16160081 |
| 5/14 | May 14, 19811981年5月14日 | Unknown | | Q69294767 |
| 5/16 | 16th Golden Bell Awards | Taiwan | Place: National Dr. Sun Yat-sen Memorial Hall | Q18118946 |
| 5/22 | 1st Golden Rooster Awards | People's Republic of China | Place: Hangzhou | Q4596350 |
| 5/23 | Assalt al Banco Central | Spain | Place: Antic Banc Central | Q17587222 |
| 5/24 | Jaime Roldos Aquileraハイメ・ロルドス・アギレーラ | Unknown | | Q709244 |
| 5/24 | Martha Bucaram | Unknown | | Q20830783 |
| 5/24 | 1981 Cypriot legislative election1981年キプロス議会総選挙 | Cyprus | | Q3563446 |
| 5/24 | 1981 Spanish motorcycle Grand Prix | Spain | | Q21189158 |
| 5/26 | 1981 Dutch general election1981年オランダ総選挙 | Netherlands | | Q1909932 |
| 5/28 | 1981 UAE President's Cup Final | Unknown | | Q110937705 |
| 5/30 | assassination of Ziaur Rahman | Bangladesh | Place: Chittagong | Q4808524 |
| 5/31 | 1981 Yugoslavian motorcycle Grand Prix | Yugoslavia | | Q3774891 |
| 6/1 | Burning of Jaffna library | Sri Lanka | Place: Jaffna | Q3535947 |
| 6/1 | June 19811981年6月 | Unknown | | Q6312030 |
| 6/1 | Midori-sō incidentJapanみどり荘事件 | Japan | Place: Ōita-shi | Q11279104 |
| 6/1 | Deaths in June 1981訃報 1981年6月 | Unknown | | Q109356135 |
| 6/1 | disappearance of Mary Louise Day | Unknown | Place: Seaside | Q97155876 |
| 6/1 | 1981 European Ladies' Team Championship | Portugal | | Q109538715 |
| 6/1 | 1981 Dutch Senate election1981年オランダ上院選挙 | Netherlands | | Q19838076 |
| 6/4 | Osieck rail crash | Poland | | Q11737182 |
| 6/5 | Slovak parliamentary election, 1981 | Slovakia | | Q11931846 |
| 6/6 | Bihar train derailment1981年ビハール州列車転落事故 | India | | Q3672276 |
| 6/6 | 1981 Taça de Portugal Final | Portugal | Place: Estádio Nacional | Q16851656 |
| 6/6 | Murder of Marion Crofts | United Kingdom | | Q96394357 |
| 6/7 | Operation Operaイラク原子炉爆撃事件 | Iraq | Place: Iraq | Q725043 |
| 6/7 | 1981 Bulgarian parliamentary election | Bulgaria | | Q4996285 |
| 6/7 | 1981 Budweiser NASCAR 400 | United States | Place: Texas World Speedway | Q4579754 |
| 6/9 | 1981 NBA Draft1981年のNBAドラフト | United States | Place: Madison Square Garden | Q1959893 |
| 6/10 | 1981 Gullegem Koerse | Belgium | | Q115556874 |
| 6/11 | 1981 Irish general election1981年アイルランド総選挙 | Ireland | | Q1327915 |
| 6/11 | 1981 Golbaf earthquake | Iran | | Q30323838 |
| 6/11 | 1981 Erfurt-Bischleben rail accident | Germany | Place: Bischleben | Q15110213 |
| 6/12 | 1981 Djiboutian presidential election | Djibouti | | Q2115139 |
| 6/13 | 1981 Coupe de France Final | France | Place: Parc des Princes | Q4579793 |
| 6/14 | 1981 French legislative election1981年フランス議会総選挙 | France | | Q2714528 |
| 6/14 | 1981 East German general election1981年ドイツ民主共和国人民議会選挙 | East Germany | | Q5328429 |
| 6/14 | Aeroflot Flight 498 | Unknown | Place: Lake Baikal | Q16662433 |
| 6/16 | 1981 Philippine presidential election and referendum1981年大統領選挙と国民投票 | Philippines | | Q7185386 |
| 6/17 | Bombing of Lebanon | Lebanon | Place: Lebanon | Q19428992 |
| 6/18 | 1981 Barbadian general election | Barbados | | Q4858573 |
| 6/19 | 1981 Algerian Cup Final | Algeria | Place: Stade 24 Fevrier 1956 | Q20805485 |
| 6/20 | 20 June 1981 Iranian protests | Iran | | Q5948311 |
| 6/21 | 1981 Sicilian regional election | Italy | | Q1094410 |
| 6/21 | 1981 Mongolian legislative election | Mongolia | | Q6899696 |
| 6/22 | Occupational Safety and Health Convention職業上の安全及び健康並びに作業環境に関する条約(第百五十五号) | Switzerland | Place: Geneva | Q7075790 |
| 6/22 | 1981 Anguillan general election | Anguilla | | Q20313115 |
| 6/26 | Dan-Air Flight 240 | United Kingdom | | Q5213021 |
| 6/27 | African Charter on Human and Peoples' Rights人及び人民の権利に関するアフリカ憲章 | Unknown | Place: Nairobi | Q385961 |
| 6/27 | 1981 attempted assassination of Ali Khameneiアリー・ハーメネイーの暗殺未遂 | Iran | Place: Abuzar Mosque | Q25432826 |
| 6/27 | 1981 Dutch TT1981年のオランダグランプリ | Netherlands | | Q21286568 |
| 6/28 | Haft-e Tir bombing | Iran | Place: Tehran | Q5638475 |
| 6/28 | 1981 Northern Cyprus general election | Northern Cyprus | | Q16958891 |
| 6/30 | 1981 Israeli legislative election | Israel | | Q2917008 |
| 7/1 | Wonderland murdersワンダーランド殺人事件 | United States | | Q690445 |
| 7/1 | July 19811981年7月 | Unknown | | Q12060916 |
| 7/1 | 8th Saturn Awards第8回サターン賞 | United States | Place: United States | Q2226394 |
| 7/1 | Deaths in July 1981訃報 1981年7月 | Unknown | | Q109356137 |
| 7/1 | 1981 Swedish Open | Sweden | Place: Båstad Tennis Stadium | Q14374077 |
| 7/1 | 1981 Women's Nordic Football Championship | Norway | | Q1555312 |
| 7/1 | 1981 Toxteth riots | United Kingdom | Place: Toxteth | Q4580026 |
| 7/4 | 1981 Norwegian parliamentary election | Norway | | Q1800832 |
| 7/5 | 1981 Belgian motorcycle Grand Prix | Belgium | | Q21296060 |
| 7/6 | Mississippi's 4th congressional district special election, 1981 | United States | | Q55623452 |
| 7/9 | 1981 Chengdu-Kunming Railway Train Crash1981年成昆線列車転落事故 | People's Republic of China | | Q3915738 |
| 7/12 | 1981 San Marino motorcycle Grand Prix | San Marino | | Q3774900 |
| 7/16 | 1981 Warrington by-election | United Kingdom | | Q7970743 |
| 7/17 | Hyatt Regency walkway collapseハイアットリージェンシー空中通路落下事故 | United States | Place: Kansas City | Q1038788 |
| 7/17 | July 1981 lunar eclipse1981年7月17日の月食 | Unknown | | Q6310503 |
| 7/17 | Glasdrumman ambush | United Kingdom | | Q5566708 |
| 7/18 | 1981 Armenia mid-air collisionアルメニア空中衝突 | Argentina | Place: Armenia | Q4202305 |
| 7/18 | Auriol massacre | France | Place: Auriol | Q3541865 |
| 7/20 | Miss Universe 1981ミス・ユニバース1981 | Unknown | Place: Minskoff Theatre | Q276795 |
| 7/20 | Somali Airlines Flight 40 | Somalia | Place: Somalia | Q7559133 |
| 7/22 | Yangquan theatre bombing | People's Republic of China | Place: Yangquan | Q17055674 |
| 7/24 | July 1981 Iranian presidential election | Iran | Place: Iran | Q1672406 |
| 7/27 | Aeroméxico Flight 230アエロメヒコ航空230便事故 | Mexico | Place: Chihuahua International Airport | Q4688331 |
| 7/28 | 1981 Sirch earthquake | Iran | | Q22093739 |
| 7/28 | 1981 Scheldeprijs | Belgium | | Q55601105 |
| 7/28 | July 28, 19811981年7月28日 | Unknown | | Q16025377 |
| 7/29 | wedding of Charles, Prince of Wales, and Lady Diana Spencerチャールズ王子とダイアナ・スペンサーの婚礼 | United Kingdom | Place: St Paul's Cathedral | Q1094155 |
| 7/30 | 1981 Gambian coup d'état attempt | The Gambia | | Q60788470 |
| 7/31 | solar eclipse of July 31, 19811981年7月31日の日食 | Soviet Union | | Q4427819 |
| 7/31 | 1981 Panamanian Air Force Twin Otter crash航空機墜落事故 | Panama | | Q4579944 |
| 8/1 | August 19811981年8月 | Unknown | | Q4820539 |
| 8/1 | Deaths in August 1981訃報 1981年8月 | Unknown | | Q109356139 |
| 8/1 | 1981 Professional Air Traffic Controllers Organization strike | Unknown | | Q108910275 |
| 8/2 | 1981 British motorcycle Grand Prix | United Kingdom | | Q21349483 |
| 8/5 | Nineteenth government of Israel第19次 | Israel | | Q7038552 |
| 8/5 | 男鹿脇本事件Japan | Japan | | Q11578198 |
| 8/9 | 1981 Major League Baseball All-Star Game1981年のMLBオールスターゲーム | United States | Place: Cleveland Stadium | Q4579879 |
| 8/9 | 1981 Finnish motorcycle Grand Prix | Finland | | Q21400273 |
| 8/9 | 1981 Barrington Tops Cessna 210 disappearance | Australia | | Q22093756 |
| 8/13 | 1981 Bristow Helicopters Westland Wessex crash1981年ブリストウ・ヘリコプターズ・ウェストランド ウェセックス墜落事故 | Unknown | | Q4579750 |
| 8/15 | 1981 Swedish motorcycle Grand Prix | Sweden | | Q21406010 |
| 8/18 | August 18, 19811981年8月18日 | Unknown | | Q36295577 |
| 8/19 | Gulf of Sidra incidentシドラ湾事件 | Libya | Place: Gulf of Sidra | Q2604253 |
| 8/20 | August 1981 Fermanagh and South Tyrone by-election | United Kingdom | | Q5444369 |
| 8/22 | Far Eastern Air Transport Flight 103遠東航空103便墜落事故 | Unknown | Place: Taipei | Q699195 |
| 8/22 | Hijacking of LOT Polish Airlines Flight 702 | Unknown | | Q18146037 |
| 8/24 | Aeroflot Flight 811 | Unknown | Place: Zavitinsk | Q15644543 |
| 8/26 | Aeropesca Colombia Flight 221 | Colombia | | Q16960378 |
| 8/28 | August 28, 19811981年8月28日 | Unknown | | Q36296951 |
| 8/29 | 1981 Vienna synagogue attack | Austria | Place: Innere Stadt | Q4580044 |
| 8/30 | 1981 Czechoslovakian motorcycle Grand Prix | Czechoslovakia | Place: Masaryk Circuit | Q3774810 |
| 8/30 | 1981 UCI Road World Championships – Men's road race | Czechoslovakia | | Q48844547 |
| 9/1 | Category:September 1981Category:1981年9月 | Unknown | | Q9409465 |
| 9/1 | September 19811981年9月 | Unknown | | Q3478974 |
| 9/1 | 1981 Central African Republic coup d'état1981年中央アフリカ共和国クーデター | Central African Republic | Place: Central African Republic | Q20982123 |
| 9/1 | Category:September 1981 by country | Unknown | | Q83539780 |
| 9/1 | Category:September 1981 in Asia | Unknown | | Q111936037 |
| 9/1 | Category:September 1981 in Europe | Unknown | | Q30617810 |
| 9/1 | Category:September 1981 by continent | Unknown | | Q30617811 |
| 9/1 | Category:September 1981 in the United States | Unknown | | Q83539772 |
| 9/1 | Category:September 1981 in North America | Unknown | | Q83539787 |
| 9/1 | Deaths in September 1981訃報 1981年9月 | Unknown | | Q109356140 |
| 9/1 | September 1981 Arrests (Egypt) | Egypt | | Q12183143 |
| 9/1 | Category:September 1981 in the Soviet Union | Unknown | | Q131327666 |
| 9/1 | Category:September 1981 in sports | Unknown | | Q13348195 |
| 9/1 | Category:September 1981 sports events in Europe | Unknown | | Q30618532 |
| 9/1 | Category:September 1981 in Canada | Unknown | | Q86803040 |
| 9/1 | Category:September 1981 sports events in North America | Unknown | | Q105303254 |
| 9/1 | Category:September 1981 in Oceania | Unknown | | Q105421330 |
| 9/1 | Category:September 1981 in Australia | Unknown | | Q106207339 |
| 9/1 | Category:September 1981 in Japan | Unknown | | Q131893093 |
| 9/1 | Category:September 1981 in the United Kingdom | Unknown | | Q86803044 |
| 9/1 | Category:September 1981 sports events in Canada | Unknown | | Q86803045 |
| 9/1 | Category:September 1981 sports events in the United States | Unknown | | Q86803048 |
| 9/1 | Category:September 1981 in Africa | Unknown | | Q98637551 |
| 9/8 | 1981 Tuvaluan general election | Tuvalu | | Q7857126 |
| 9/9 | Square Root Day平方根の日 | Unknown | | Q2672046 |
| 9/9 | Norway v England | Norway | Place: Ullevaal Stadion | Q25434057 |
| 9/13 | 1981 European Marathon Cup | France | | Q15503324 |
| 9/16 | Ray Leonard vs. Thomas Hearns | United States | Place: Caesars Palace | Q7634894 |
| 9/18 | 1981 Zheleznogorsk mid-air collision | Unknown | Place: Nizhneilimsky District | Q16702251 |
| 9/20 | 1981 Grote Prijs Jef Scherens | Belgium | | Q18613177 |
| 9/22 | Eastern Airlines Flight 935 | United States | | Q16974593 |
| 9/23 | 1981 Paris–Brussels | France, Belgium | | Q57778500 |
| 9/23 | Category:September 23, 1981 | Unknown | | Q88705913 |
| 9/24 | 1981 Turkish consulate attack in Paris | France | Place: Paris | Q2367389 |
| 9/26 | 26th David di Donatello Awards第26回ダヴィッド・ディ・ドナテッロ賞 | Italy | Place: Teatro dell'Opera di Roma | Q3703414 |
| 9/27 | 1981 Berlin Marathonベルリン・マラソン1981 | Germany | Place: Berlin | Q2257324 |
| 9/27 | 1981 Chicago Marathonシカゴ・マラソン1981 | United States | Place: Chicago | Q2415438 |
| 9/29 | 1981 Iranian Air Force C-130 crash | Unknown | | Q5933282 |
| 9/29 | Indian Airlines IC-423 | India | | Q55614412 |
| 10/1 | October 19811981年10月 | Unknown | | Q7076900 |
| 10/1 | Deaths in October 1981訃報 1981年10月 | Unknown | | Q109356141 |
| 10/1 | Valence Congress | France | | Q2993102 |
| 10/1 | 1981 Skate America1981年スケートアメリカ | United States | Place: Herb Brooks Arena | Q3486151 |
| 10/2 | October 1981 Iranian presidential election | Iran | Place: Iran | Q1672408 |
| 10/4 | 1981 Burmese general election | Myanmar | | Q4999444 |
| 10/6 | assassination of Anwar Sadatアンワル・アッ=サーダート暗殺事件 | Egypt | Place: Cairo | Q2756743 |
| 10/6 | NLM CityHopper Flight 431NLMシティホッパー431便墜落事故 | Netherlands | Place: Rotterdam | Q2303215 |
| 10/6 | 1981 Nova Scotia general election | Canada | | Q3586364 |
| 10/10 | demonstration for peace at Hofgarten, Bonn, West Germany, 1981 | Unknown | Place: Hofgarten | Q1456700 |
| 10/11 | 1981 Paris-Tours | France | | Q41755129 |
| 10/13 | Egyptian presidential confirmation referendum, 1981 | Egypt | | Q5348499 |
| 10/15 | 1981 United Nations Security Council election1981年国連安保理 非常任理事国選挙 | United Nations | | Q7888923 |
| 10/18 | 1981 European Parliament election in Greece | Greece | | Q2576812 |
| 10/18 | 1981 Greek legislative election | Greece | | Q1337898 |
| 10/20 | 1981 Galician regional election1981年ガリシア自治州議会選挙 | Spain | | Q3139214 |
| 10/20 | 1981 Antwerp bombing | Belgium | Place: Antwerp | Q4579715 |
| 10/20 | 1981 Brink's robberyブリンクス強盗 | United States | Place: Nanuet | Q2923878 |
| 10/21 | Malév Flight 641 | Unknown | Place: Czechoslovakia | Q16532402 |
| 10/22 | 1981 Croydon North West by-election | United Kingdom | | Q5189686 |
| 10/24 | 1981 Playa Azul earthquake | Mexico | | Q497328 |
| 10/25 | 1981 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 | Q2423467 |
| 10/27 | October 27, 19811981年10月27日 | Unknown | | Q69294953 |
| 10/28 | 1981 Andalusian Statute of Autonomy referendum | Spain | | Q85725131 |
| 10/29 | murder of Tina Harmon | United States | Place: Lodi | Q6938089 |
| 10/30 | 18th Golden Horse Film Awards第18回金馬奨 | Taiwan | Place: Kaohsiung Cultural Center | Q15900007 |
| 10/30 | 17th Guldbagge Awards | Unknown | Place: Hamburger Börs | Q15964774 |
| 10/31 | 1981 Anson by-election | Singapore | | Q7523278 |
| 11/1 | November 19811981年11月 | Unknown | | Q3345434 |
| 11/1 | 1981 Tunisian parliamentary election | Tunisia | | Q7853209 |
| 11/1 | Deaths in November 1981訃報 1981年11月 | Unknown | | Q109356142 |
| 11/1 | 1981 Stockholm Open | Sweden | Place: Royal Tennis Hall | Q3973685 |
| 11/1 | 1981 Blue Swords | East Germany | Place: Chemnitz | Q28407690 |
| 11/3 | 1981 New Jersey gubernatorial election1981年ニュージャージー州知事選挙 | United States | | Q21188545 |
| 11/3 | 1981 United States gubernatorial elections1981年アメリカ合衆国州知事選挙 | United States | | Q1002336 |
| 11/3 | United States Virgin Islands constitutional referendum, 1981 | United States | | Q7892276 |
| 11/4 | Kitchen Meeting | Canada | | Q20310885 |
| 11/8 | Aeroméxico Flight 110アエロメヒコ航空110便墜落事故 | Unknown | | Q93990392 |
| 11/8 | 1981 Belgian general election1981年の総選挙 | Belgium | | Q211565 |
| 11/8 | 1981 German-speaking Community Parliament election | Belgium | | Q16295334 |
| 11/8 | 1981 Australian Grand Prix1981年オーストラリアグランプリ | Australia | | Q4579728 |
| 11/9 | 1981 Syrian parliamentary election | Syria | | Q7663282 |
| 11/9 | 1981 Trinidad and Tobago general election | Trinidad and Tobago | | Q7842461 |
| 11/13 | 1981–82 Sudanese parliamentary election | Sudan | | Q7633398 |
| 11/14 | 1981 Taiwan mayor election1981年中華民国県市長選挙 | Taiwan | | Q10843960 |
| 11/14 | Sinking of El Karina | Colombia | | Q99695437 |
| 11/15 | 1981 Bangladeshi presidential election | Bangladesh | | Q4376786 |
| 11/17 | Aeroflot Flight 3603 | Unknown | Place: Krasnoyarsk Krai | Q15621252 |
| 11/17 | 1981 Manitoba general election | Canada | | Q17109174 |
| 11/17 | 1981 Danish local elections | Denmark | | Q25055805 |
| 11/21 | Demonstration against nuclear weapons, 21 november 1981 in Amsterdam | Netherlands | Place: Museumplein | Q19765971 |
| 11/22 | 1981 Japan CupJapan第1回ジャパンカップ | Japan | Place: Tokyo Racecourse | Q11600417 |
| 11/23 | Setiabudi 13 caseセティアブディ13事件 | Indonesia | | Q97212954 |
| 11/25 | 1981 Seychelles coup d'état attempt1981年セーシェルクーデター未遂 | Seychelles | Place: Seychelles International Airport | Q29378733 |
| 11/25 | Scarman report | Unknown | | Q7430492 |
| 11/26 | 1981 Crosby by-election | United Kingdom | | Q17479687 |
| 11/28 | 1981 New Zealand general election | New Zealand | | Q7016154 |
| 11/28 | 1981 Scottish League Cup Final | Unknown | Place: Hampden Park | Q4484661 |
| 11/29 | 1981 Azbakiyah bombing | Syrian Arab Republic | Place: Damascus | Q16151393 |
| 11/29 | 1981 Honduran general election1981年ホンジュラス総選挙 | Honduras | | Q15816543 |
| 12/1 | Inex-Adria Aviopromet Flight 1308イネックス・アドリア航空1308便墜落事故 | France, Slovenia | | Q3562572 |
| 12/1 | December 19811981年12月 | Unknown | | Q5248952 |
| 12/1 | 1981–82 Four Hills Tournament | Unknown | | Q827361 |
| 12/1 | Deaths in December 1981訃報 1981年12月 | Unknown | | Q109356143 |
| 12/1 | 1981 Izvestia Trophy | Soviet Union | | Q11722766 |
| 12/1 | December 1981 windstorm | Unknown | | Q5248954 |
| 12/1 | 1981 Prize of Moscow News | Soviet Union | Place: Moscow | Q28450678 |
| 12/1 | 3rd Youth in Film Awards | United States | Place: Hollywood | Q4637013 |
| 12/7 | Operation Tariq al-Qodsタリーゴル=コッズ作戦 | Iran | Place: Dasht-e Azadegan County | Q1382298 |
| 12/8 | 1981 Danish general election | Denmark | | Q3777486 |
| 12/9 | 1981 Andorran parliamentary election | Andorra | | Q4754578 |
| 12/11 | El Mozote massacreエル・モゾテの虐殺 | El Salvador | Place: El Mozote | Q1414900 |
| 12/11 | Muhammad Ali vs. Trevor Berbick | The Bahamas | Place: Nassau | Q28221480 |
| 12/12 | 1981 Maltese general election | Malta | | Q3722367 |
| 12/15 | 1981 Iraqi embassy bombing | Unknown | Place: Beirut | Q16057076 |
| 12/16 | Pacification of Wujek | Polish People's Republic | Place: Wujek Coal Mine | Q4477811 |
| 12/19 | Penlee lifeboat disasterペンレー救命艇の惨劇 | Unknown | | Q12065527 |
| 12/28 | 1981 Cuban parliamentary election | Cuba | | Q2753192 |
| 12/28 | 1981 Rwandan parliamentary election | Rwanda | | Q7383751 |
| 12/31 | 23rd Japan Record AwardsJapan第23回日本レコード大賞 | Japan | Place: Imperial Theatre | Q11600612 |
| 12/31 | 1981 Ghanaian coup d'état | Ghana | | Q102421173 |