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| Date | Title | Country | Details |
|---|---|---|---|
| 1/3 | Blank SpaceDetailsArtist: Taylor Swift · Weeks at No. 1 that month: 2 | United States | Artist: Taylor Swift · Weeks at No. 1 that month: 2 |
| 1/17 | Uptown FunkDetailsArtist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 3 | United States | Artist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 3 |
| 2/7 | Uptown FunkDetailsArtist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 4 | United States | Artist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 4 |
| 3/7 | Uptown FunkDetailsArtist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 4 | United States | Artist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 4 |
| 4/4 | Uptown FunkDetailsArtist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 3 | United States | Artist: Mark Ronson featuring Bruno Mars · Weeks at No. 1 that month: 3 |
| 4/25 | See You AgainDetailsArtist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 1 | United States | Artist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 1 |
| 5/2 | See You AgainDetailsArtist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 5 | United States | Artist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 5 |
| 6/6 | Bad BloodDetailsArtist: Taylor Swift featuring Kendrick Lamar · Weeks at No. 1 that month: 1 | United States | Artist: Taylor Swift featuring Kendrick Lamar · Weeks at No. 1 that month: 1 |
| 6/13 | See You AgainDetailsArtist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 3 | United States | Artist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 3 |
| 7/4 | See You AgainDetailsArtist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 3 | United States | Artist: Wiz Khalifa featuring Charlie Puth · Weeks at No. 1 that month: 3 |
| 7/25 | CheerleaderDetailsArtist: Omi · Weeks at No. 1 that month: 1 | United States | Artist: Omi · Weeks at No. 1 that month: 1 |
| 8/1 | CheerleaderDetailsArtist: Omi · Weeks at No. 1 that month: 4 | United States | Artist: Omi · Weeks at No. 1 that month: 4 |
| 8/22 | Can't Feel My FaceDetailsArtist: The Weeknd · Weeks at No. 1 that month: 1 | United States | Artist: The Weeknd · Weeks at No. 1 that month: 1 |
| 9/5 | CheerleaderDetailsArtist: Omi · Weeks at No. 1 that month: 1 | United States | Artist: Omi · Weeks at No. 1 that month: 1 |
| 9/12 | Can't Feel My FaceDetailsArtist: The Weeknd · Weeks at No. 1 that month: 2 | United States | Artist: The Weeknd · Weeks at No. 1 that month: 2 |
| 9/19 | What Do You Mean?DetailsArtist: Justin Bieber · Weeks at No. 1 that month: 1 | United States | Artist: Justin Bieber · Weeks at No. 1 that month: 1 |
| 10/3 | The HillsDetailsArtist: The Weeknd · Weeks at No. 1 that month: 5 | United States | Artist: The Weeknd · Weeks at No. 1 that month: 5 |
| 11/7 | The HillsDetailsArtist: The Weeknd · Weeks at No. 1 that month: 1 | United States | Artist: The Weeknd · Weeks at No. 1 that month: 1 |
| 11/14 | HelloDetailsArtist: Adele · Weeks at No. 1 that month: 3 | United States | Artist: Adele · Weeks at No. 1 that month: 3 |
| 12/5 | HelloDetailsArtist: Adele · Weeks at No. 1 that month: 4 | United States | Artist: Adele · Weeks at No. 1 that month: 4 |