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| Date | Title | Country | Details |
|---|---|---|---|
| 1/4 | Say You, Say MeDetailsArtist: Lionel Richie · Weeks at No. 1 that month: 2 | United States | Artist: Lionel Richie · Weeks at No. 1 that month: 2 |
| 1/18 | That's What Friends Are ForDetailsArtist: Dionne and Friends · Weeks at No. 1 that month: 2 | United States | Artist: Dionne and Friends · Weeks at No. 1 that month: 2 |
| 2/1 | That's What Friends Are ForDetailsArtist: Dionne and Friends · Weeks at No. 1 that month: 2 | United States | Artist: Dionne and Friends · Weeks at No. 1 that month: 2 |
| 2/15 | How Will I KnowDetailsArtist: Whitney Houston · Weeks at No. 1 that month: 2 | United States | Artist: Whitney Houston · Weeks at No. 1 that month: 2 |
| 3/1 | KyrieDetailsArtist: Mr. Mister · Weeks at No. 1 that month: 2 | United States | Artist: Mr. Mister · Weeks at No. 1 that month: 2 |
| 3/15 | SaraDetailsArtist: Starship · Weeks at No. 1 that month: 1 | United States | Artist: Starship · Weeks at No. 1 that month: 1 |
| 3/22 | These DreamsDetailsArtist: Heart · Weeks at No. 1 that month: 1 | United States | Artist: Heart · Weeks at No. 1 that month: 1 |
| 3/29 | Rock Me AmadeusDetailsArtist: Falco · Weeks at No. 1 that month: 1 | United States | Artist: Falco · Weeks at No. 1 that month: 1 |
| 4/5 | Rock Me AmadeusDetailsArtist: Falco · Weeks at No. 1 that month: 2 | United States | Artist: Falco · Weeks at No. 1 that month: 2 |
| 4/19 | KissDetailsArtist: Prince and the Revolution · Weeks at No. 1 that month: 2 | United States | Artist: Prince and the Revolution · Weeks at No. 1 that month: 2 |
| 5/3 | Addicted to LoveDetailsArtist: Robert Palmer · Weeks at No. 1 that month: 1 | United States | Artist: Robert Palmer · Weeks at No. 1 that month: 1 |
| 5/10 | West End GirlsDetailsArtist: Pet Shop Boys · Weeks at No. 1 that month: 1 | United States | Artist: Pet Shop Boys · Weeks at No. 1 that month: 1 |
| 5/17 | Greatest Love of AllDetailsArtist: Whitney Houston · Weeks at No. 1 that month: 3 | United States | Artist: Whitney Houston · Weeks at No. 1 that month: 3 |
| 6/7 | Live to TellDetailsArtist: Madonna · Weeks at No. 1 that month: 1 | United States | Artist: Madonna · Weeks at No. 1 that month: 1 |
| 6/14 | On My OwnDetailsArtist: Patti LaBelle and Michael McDonald · Weeks at No. 1 that month: 3 | United States | Artist: Patti LaBelle and Michael McDonald · Weeks at No. 1 that month: 3 |
| 7/5 | There'll Be Sad Songs (To Make You Cry)DetailsArtist: Billy Ocean · Weeks at No. 1 that month: 1 | United States | Artist: Billy Ocean · Weeks at No. 1 that month: 1 |
| 7/12 | Holding Back the YearsDetailsArtist: Simply Red · Weeks at No. 1 that month: 1 | United States | Artist: Simply Red · Weeks at No. 1 that month: 1 |
| 7/19 | Invisible TouchDetailsArtist: Genesis · Weeks at No. 1 that month: 1 | United States | Artist: Genesis · Weeks at No. 1 that month: 1 |
| 7/26 | SledgehammerDetailsArtist: Peter Gabriel · Weeks at No. 1 that month: 1 | United States | Artist: Peter Gabriel · Weeks at No. 1 that month: 1 |
| 8/2 | Glory of LoveDetailsArtist: Peter Cetera · Weeks at No. 1 that month: 2 | United States | Artist: Peter Cetera · Weeks at No. 1 that month: 2 |
| 8/16 | Papa Don't PreachDetailsArtist: Madonna · Weeks at No. 1 that month: 2 | United States | Artist: Madonna · Weeks at No. 1 that month: 2 |
| 8/30 | Higher LoveDetailsArtist: Steve Winwood · Weeks at No. 1 that month: 1 | United States | Artist: Steve Winwood · Weeks at No. 1 that month: 1 |
| 9/6 | VenusDetailsArtist: Bananarama · Weeks at No. 1 that month: 1 | United States | Artist: Bananarama · Weeks at No. 1 that month: 1 |
| 9/13 | Take My Breath AwayDetailsArtist: Berlin · Weeks at No. 1 that month: 1 | United States | Artist: Berlin · Weeks at No. 1 that month: 1 |
| 9/20 | Stuck with YouDetailsArtist: Huey Lewis and the News · Weeks at No. 1 that month: 2 | United States | Artist: Huey Lewis and the News · Weeks at No. 1 that month: 2 |
| 10/4 | Stuck with YouDetailsArtist: 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 |
| 10/11 | When I Think of YouDetailsArtist: Janet Jackson · Weeks at No. 1 that month: 2 | United States | Artist: Janet Jackson · Weeks at No. 1 that month: 2 |
| 10/25 | True ColorsDetailsArtist: Cyndi Lauper · Weeks at No. 1 that month: 1 | United States | Artist: Cyndi Lauper · Weeks at No. 1 that month: 1 |
| 11/1 | True ColorsDetailsArtist: Cyndi Lauper · Weeks at No. 1 that month: 1 | United States | Artist: Cyndi Lauper · Weeks at No. 1 that month: 1 |
| 11/8 | AmandaDetailsArtist: Boston · Weeks at No. 1 that month: 2 | United States | Artist: Boston · Weeks at No. 1 that month: 2 |
| 11/22 | HumanDetailsArtist: The Human League · Weeks at No. 1 that month: 1 | United States | Artist: The Human League · Weeks at No. 1 that month: 1 |
| 11/29 | You Give Love a Bad NameDetailsArtist: Bon Jovi · Weeks at No. 1 that month: 1 | United States | Artist: Bon Jovi · Weeks at No. 1 that month: 1 |
| 12/6 | The Next Time I FallDetailsArtist: Peter Cetera and Amy Grant · Weeks at No. 1 that month: 1 | United States | Artist: Peter Cetera and Amy Grant · Weeks at No. 1 that month: 1 |
| 12/13 | The Way It IsDetailsArtist: Bruce Hornsby & the Range · Weeks at No. 1 that month: 1 | United States | Artist: Bruce Hornsby & the Range · Weeks at No. 1 that month: 1 |
| 12/20 | 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 |