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| Date | Title | Country | Details |
|---|---|---|---|
| 1/3 | (Just Like) Starting OverDetailsArtist: John Lennon · Weeks at No. 1 that month: 4 | United States | Artist: John Lennon · Weeks at No. 1 that month: 4 |
| 1/31 | The Tide Is HighDetailsArtist: Blondie · Weeks at No. 1 that month: 1 | United States | Artist: Blondie · Weeks at No. 1 that month: 1 |
| 2/7 | CelebrationDetailsArtist: Kool & the Gang · Weeks at No. 1 that month: 2 | United States | Artist: Kool & the Gang · Weeks at No. 1 that month: 2 |
| 2/21 | 9 to 5DetailsArtist: Dolly Parton · Weeks at No. 1 that month: 1 | United States | Artist: Dolly Parton · Weeks at No. 1 that month: 1 |
| 2/28 | I Love a Rainy NightDetailsArtist: Eddie Rabbitt · Weeks at No. 1 that month: 1 | United States | Artist: Eddie Rabbitt · Weeks at No. 1 that month: 1 |
| 3/7 | I Love a Rainy NightDetailsArtist: Eddie Rabbitt · Weeks at No. 1 that month: 1 | United States | Artist: Eddie Rabbitt · Weeks at No. 1 that month: 1 |
| 3/14 | 9 to 5DetailsArtist: Dolly Parton · Weeks at No. 1 that month: 1 | United States | Artist: Dolly Parton · Weeks at No. 1 that month: 1 |
| 3/21 | Keep On Loving YouDetailsArtist: REO Speedwagon · Weeks at No. 1 that month: 1 | United States | Artist: REO Speedwagon · Weeks at No. 1 that month: 1 |
| 3/28 | RaptureDetailsArtist: Blondie · Weeks at No. 1 that month: 1 | United States | Artist: Blondie · Weeks at No. 1 that month: 1 |
| 4/4 | RaptureDetailsArtist: Blondie · Weeks at No. 1 that month: 1 | United States | Artist: Blondie · Weeks at No. 1 that month: 1 |
| 4/11 | Kiss on My ListDetailsArtist: Daryl Hall & John Oates · Weeks at No. 1 that month: 3 | United States | Artist: Daryl Hall & John Oates · Weeks at No. 1 that month: 3 |
| 5/2 | Morning Train (Nine to Five)DetailsArtist: Sheena Easton · Weeks at No. 1 that month: 2 | United States | Artist: Sheena Easton · Weeks at No. 1 that month: 2 |
| 5/16 | Bette Davis EyesDetailsArtist: Kim Carnes · Weeks at No. 1 that month: 3 | United States | Artist: Kim Carnes · Weeks at No. 1 that month: 3 |
| 6/6 | Bette Davis EyesDetailsArtist: Kim Carnes · Weeks at No. 1 that month: 3 | United States | Artist: Kim Carnes · Weeks at No. 1 that month: 3 |
| 6/20 | MedleyDetailsArtist: Stars on 45 · Weeks at No. 1 that month: 1 | United States | Artist: Stars on 45 · Weeks at No. 1 that month: 1 |
| 7/4 | Bette Davis EyesDetailsArtist: Kim Carnes · Weeks at No. 1 that month: 3 | United States | Artist: Kim Carnes · Weeks at No. 1 that month: 3 |
| 7/25 | The One That You LoveDetailsArtist: Air Supply · Weeks at No. 1 that month: 1 | United States | Artist: Air Supply · Weeks at No. 1 that month: 1 |
| 8/1 | Jessie's GirlDetailsArtist: Rick Springfield · Weeks at No. 1 that month: 2 | United States | Artist: Rick Springfield · Weeks at No. 1 that month: 2 |
| 8/15 | Endless LoveDetailsArtist: Diana Ross and Lionel Richie · Weeks at No. 1 that month: 3 | United States | Artist: Diana Ross and Lionel Richie · Weeks at No. 1 that month: 3 |
| 9/5 | Endless LoveDetailsArtist: Diana Ross and Lionel Richie · Weeks at No. 1 that month: 4 | United States | Artist: Diana Ross and Lionel Richie · Weeks at No. 1 that month: 4 |
| 10/3 | Endless LoveDetailsArtist: Diana Ross and Lionel Richie · Weeks at No. 1 that month: 2 | United States | Artist: Diana Ross and Lionel Richie · Weeks at No. 1 that month: 2 |
| 10/17 | Arthur's Theme (Best That You Can Do)DetailsArtist: Christopher Cross · Weeks at No. 1 that month: 3 | United States | Artist: Christopher Cross · Weeks at No. 1 that month: 3 |
| 11/7 | Private EyesDetailsArtist: Daryl Hall & John Oates · Weeks at No. 1 that month: 2 | United States | Artist: Daryl Hall & John Oates · Weeks at No. 1 that month: 2 |
| 11/21 | PhysicalDetailsArtist: Olivia Newton-John · Weeks at No. 1 that month: 2 | United States | Artist: Olivia Newton-John · Weeks at No. 1 that month: 2 |
| 12/5 | PhysicalDetailsArtist: Olivia Newton-John · Weeks at No. 1 that month: 4 | United States | Artist: Olivia Newton-John · Weeks at No. 1 that month: 4 |