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| Date | Title | Country | Details |
|---|---|---|---|
| 1/3 | Walk Like an EgyptianDetailsArtist: The Bangles · Weeks at No. 1 that month: 2 | United States | Artist: The Bangles · Weeks at No. 1 that month: 2 |
| 1/17 | Shake You DownDetailsArtist: Gregory Abbott · Weeks at No. 1 that month: 1 | United States | Artist: Gregory Abbott · Weeks at No. 1 that month: 1 |
| 1/24 | At This MomentDetailsArtist: Billy Vera and the Beaters · Weeks at No. 1 that month: 2 | United States | Artist: Billy Vera and the Beaters · Weeks at No. 1 that month: 2 |
| 2/7 | Open Your HeartDetailsArtist: Madonna · Weeks at No. 1 that month: 1 | United States | Artist: Madonna · Weeks at No. 1 that month: 1 |
| 2/14 | Livin' on a PrayerDetailsArtist: Bon Jovi · Weeks at No. 1 that month: 3 | United States | Artist: Bon Jovi · Weeks at No. 1 that month: 3 |
| 3/7 | Livin' on a PrayerDetailsArtist: Bon Jovi · Weeks at No. 1 that month: 1 | United States | Artist: Bon Jovi · Weeks at No. 1 that month: 1 |
| 3/14 | Jacob's LadderDetailsArtist: Huey Lewis and the News · Weeks at No. 1 that month: 1 | United States | Artist: Huey Lewis and the News · Weeks at No. 1 that month: 1 |
| 3/21 | Lean on MeDetailsArtist: Club Nouveau · Weeks at No. 1 that month: 2 | United States | Artist: Club Nouveau · Weeks at No. 1 that month: 2 |
| 4/4 | Nothing's Gonna Stop Us NowDetailsArtist: Starship · Weeks at No. 1 that month: 2 | United States | Artist: Starship · Weeks at No. 1 that month: 2 |
| 4/18 | I Knew You Were Waiting (For Me)DetailsArtist: Aretha Franklin and George Michael · Weeks at No. 1 that month: 2 | United States | Artist: Aretha Franklin and George Michael · Weeks at No. 1 that month: 2 |
| 5/2 | (I Just) Died in Your ArmsDetailsArtist: Cutting Crew · Weeks at No. 1 that month: 2 | United States | Artist: Cutting Crew · Weeks at No. 1 that month: 2 |
| 5/16 | With or Without YouDetailsArtist: U2 · Weeks at No. 1 that month: 3 | United States | Artist: U2 · Weeks at No. 1 that month: 3 |
| 6/6 | You Keep Me Hangin' OnDetailsArtist: Kim Wilde · Weeks at No. 1 that month: 1 | United States | Artist: Kim Wilde · Weeks at No. 1 that month: 1 |
| 6/13 | AlwaysDetailsArtist: Atlantic Starr · Weeks at No. 1 that month: 1 | United States | Artist: Atlantic Starr · Weeks at No. 1 that month: 1 |
| 6/20 | Head to ToeDetailsArtist: Lisa Lisa and Cult Jam · Weeks at No. 1 that month: 1 | United States | Artist: Lisa Lisa and Cult Jam · Weeks at No. 1 that month: 1 |
| 6/27 | I Wanna Dance with Somebody (Who Loves Me)DetailsArtist: Whitney Houston · Weeks at No. 1 that month: 1 | United States | Artist: Whitney Houston · Weeks at No. 1 that month: 1 |
| 7/4 | I Wanna Dance with Somebody (Who Loves Me)DetailsArtist: Whitney Houston · Weeks at No. 1 that month: 1 | United States | Artist: Whitney Houston · Weeks at No. 1 that month: 1 |
| 7/11 | AloneDetailsArtist: Heart · Weeks at No. 1 that month: 3 | United States | Artist: Heart · Weeks at No. 1 that month: 3 |
| 8/1 | ShakedownDetailsArtist: Bob Seger · Weeks at No. 1 that month: 1 | United States | Artist: Bob Seger · Weeks at No. 1 that month: 1 |
| 8/8 | I Still Haven't Found What I'm Looking ForDetailsArtist: U2 · Weeks at No. 1 that month: 2 | United States | Artist: U2 · Weeks at No. 1 that month: 2 |
| 8/22 | Who's That GirlDetailsArtist: Madonna · Weeks at No. 1 that month: 1 | United States | Artist: Madonna · Weeks at No. 1 that month: 1 |
| 8/29 | La BambaDetailsArtist: Los Lobos · Weeks at No. 1 that month: 1 | United States | Artist: Los Lobos · Weeks at No. 1 that month: 1 |
| 9/5 | La BambaDetailsArtist: Los Lobos · Weeks at No. 1 that month: 2 | United States | Artist: Los Lobos · Weeks at No. 1 that month: 2 |
| 9/19 | I Just Can't Stop Loving YouDetailsArtist: Michael Jackson with Siedah Garrett · Weeks at No. 1 that month: 1 | United States | Artist: Michael Jackson with Siedah Garrett · Weeks at No. 1 that month: 1 |
| 9/26 | Didn't We Almost Have It AllDetailsArtist: Whitney Houston · Weeks at No. 1 that month: 1 | United States | Artist: Whitney Houston · Weeks at No. 1 that month: 1 |
| 10/3 | Didn't We Almost Have It AllDetailsArtist: Whitney Houston · Weeks at No. 1 that month: 1 | United States | Artist: Whitney Houston · Weeks at No. 1 that month: 1 |
| 10/10 | Here I Go AgainDetailsArtist: Whitesnake · Weeks at No. 1 that month: 1 | United States | Artist: Whitesnake · Weeks at No. 1 that month: 1 |
| 10/17 | Lost in EmotionDetailsArtist: Lisa Lisa and Cult Jam · Weeks at No. 1 that month: 1 | United States | Artist: Lisa Lisa and Cult Jam · Weeks at No. 1 that month: 1 |
| 10/24 | BadDetailsArtist: Michael Jackson · Weeks at No. 1 that month: 2 | United States | Artist: Michael Jackson · Weeks at No. 1 that month: 2 |
| 11/7 | I Think We're Alone NowDetailsArtist: Tiffany · Weeks at No. 1 that month: 2 | United States | Artist: Tiffany · Weeks at No. 1 that month: 2 |
| 11/21 | Mony MonyDetailsArtist: Billy Idol · Weeks at No. 1 that month: 1 | United States | Artist: Billy Idol · Weeks at No. 1 that month: 1 |
| 11/28 | (I've Had) The Time of My LifeDetailsArtist: Bill Medley and Jennifer Warnes · Weeks at No. 1 that month: 1 | United States | Artist: Bill Medley and Jennifer Warnes · Weeks at No. 1 that month: 1 |
| 12/5 | Heaven Is a Place on EarthDetailsArtist: Belinda Carlisle · Weeks at No. 1 that month: 1 | United States | Artist: Belinda Carlisle · Weeks at No. 1 that month: 1 |
| 12/12 | FaithDetailsArtist: George Michael · Weeks at No. 1 that month: 3 | United States | Artist: George Michael · Weeks at No. 1 that month: 3 |