# List of Billboard Hot 100 number ones of 2021

This is a list of the songs placed number one in the United States during 2021. The Billboard Hot 100 is a chart that ranks the best-performing songs in the United States. Its data is compiled by MRC Data and published by American music magazine Billboard. The chart is based on each song's weekly physical and digital sales collectively, the amount of airplay it receives on American radio stations, and its streams on online digital music platforms.
Twenty-four acts reached number one in 2021, nine of whom earned their first number-one single: Olivia Rodrigo, Daniel Caesar, Giveon, Silk Sonic, Anderson .Paak, Polo G, The Kid Laroi, Future, and Jack Harlow. BTS scored three number ones while Rodrigo, Justin Bieber, Drake and Lil Nas X scored two each, as the only acts to achieve multiple number-one songs in 2021.
2021 marked the first calendar year since 1991 to have at least 10 songs reach number one on the Hot 100 by the end of May. BTS spent the most weeks at the top spot of the Hot 100 in 2021, with twelve non-consecutive weeks. Their single "Butter" is the longest running number-one song of 2021, spending ten weeks atop the chart. (Adele's "Easy On Me" also spent ten weeks total at number one, but only seven of them occurred in 2021.) Rodrigo's "Drivers License" was 2021's longest running number-one single by a female artist, with eight consecutive weeks atop. Taylor Swift scored her career's eighth number-one song this year with "All Too Well (Taylor's Version)", which broke the 49-year-old Hot 100 record of Don McLean's "American Pie" (1972) to become the longest song of all time to top the chart, clocking at 10 minutes and 13 seconds. Future broke the record for the longest wait for a #1, after 125 entries on the chart.

## Chart history

* The best-performing single of 2021, "Levitating" by Dua Lipa, peaked at number two on the Hot 100 chart dated May 22, 2021.
| No. | Issue date | Song | Artist(s) |
| re | January 2 | "All I Want for Christmas Is You" | Mariah Carey |
| re | January 9 | "Mood" | 24kGoldn featuring Iann Dior |
| re | January 16 | "Mood" | 24kGoldn featuring Iann Dior |
| 1116 | January 23 | "Drivers License" | Olivia Rodrigo |
| 1116 | January 30 | "Drivers License" | Olivia Rodrigo |
| 1116 | February 6 | "Drivers License" | Olivia Rodrigo |
| 1116 | February 13 | "Drivers License" | Olivia Rodrigo |
| 1116 | February 20 | "Drivers License" | Olivia Rodrigo |
| 1116 | February 27 | "Drivers License" | Olivia Rodrigo |
| 1116 | March 6 | "Drivers License" | Olivia Rodrigo |
| 1116 | March 13 | "Drivers License" | Olivia Rodrigo |
| 1117 | March 20 | "What's Next" | Drake |
| 1118 | March 27 | "Up" | Cardi B |
| 1119 | April 3 | "Peaches" | Justin Bieber featuring Daniel Caesar and Giveon |
| 1120 | April 10 | "Montero (Call Me by Your Name)" | Lil Nas X |
| 1121 | April 17 | "Leave the Door Open" | Silk Sonic (Bruno Mars and Anderson .Paak) |
| 1122 | April 24 | "Rapstar" | Polo G |
| 1122 | May 1 | "Rapstar" | Polo G |
| 1123 | May 8 | "Save Your Tears" | The Weeknd and Ariana Grande |
| 1123 | May 15 | "Save Your Tears" | The Weeknd and Ariana Grande |
| re | May 22 | "Leave the Door Open" | Silk Sonic (Bruno Mars and Anderson .Paak) |
| 1124 | May 29 | "Good 4 U" | Olivia Rodrigo |
| 1125 | June 5 | "Butter" | BTS |
| 1125 | June 12 | "Butter" | BTS |
| 1125 | June 19 | "Butter" | BTS |
| 1125 | June 26 | "Butter" | BTS |
| 1125 | July 3 | "Butter" | BTS |
| 1125 | July 10 | "Butter" | BTS |
| 1125 | July 17 | "Butter" | BTS |
| 1126 | July 24 | "Permission to Dance" | BTS |
| re | July 31 | "Butter" | BTS |
| re | August 7 | "Butter" | BTS |
| 1127 | August 14 | "Stay" | The Kid Laroi and Justin Bieber |
| 1127 | August 21 | "Stay" | The Kid Laroi and Justin Bieber |
| 1127 | August 28 | "Stay" | The Kid Laroi and Justin Bieber |
| 1127 | September 4 | "Stay" | The Kid Laroi and Justin Bieber |
| re | September 11 | "Butter" | BTS |
| 1128 | September 18 | "Way 2 Sexy" | Drake featuring Future and Young Thug |
| re | September 25 | "Stay" | The Kid Laroi and Justin Bieber |
| re | October 2 | "Stay" | The Kid Laroi and Justin Bieber |
| 1129 | October 9 | "My Universe" | Coldplay and BTS |
| re | October 16 | "Stay" | The Kid Laroi and Justin Bieber |
| 1130 | October 23 | "Industry Baby" | Lil Nas X and Jack Harlow |
| 1131 | October 30 | "Easy on Me" | Adele |
| 1131 | November 6 | "Easy on Me" | Adele |
| 1131 | November 13 | "Easy on Me" | Adele |
| 1131 | November 20 | "Easy on Me" | Adele |
| 1132 | November 27 | "All Too Well (Taylor's Version)" | Taylor Swift |
| re | December 4 | "Easy on Me" | Adele |
| re | December 11 | "Easy on Me" | Adele |
| re | December 18 | "Easy on Me" | Adele |
| re | December 25 | "All I Want for Christmas Is You" | Mariah Carey |

## Number-one artists

List of number-one artists by total weeks at number one :
| Position | Artist | Weeks at No. 1 |
| 1 | BTS | 12 |
| 2 | Olivia Rodrigo | 9 |
| 3 | Justin Bieber | 8 |
| 4 | The Kid Laroi | 7 |
| 4 | Adele | 7 |
| 6 | Mariah Carey | 2 |
| 6 | 24kGoldn | 2 |
| 6 | Iann Dior | 2 |
| 6 | Drake | 2 |
| 6 | Lil Nas X | 2 |
| 6 | Silk Sonic | 2 |
| 6 | Bruno Mars | 2 |
| 6 | Anderson .Paak | 2 |
| 6 | Polo G | 2 |
| 6 | The Weeknd | 2 |
| 6 | Ariana Grande | 2 |
| 17 | Cardi B | 1 |
| 17 | Daniel Caesar | 1 |
| 17 | Giveon | 1 |
| 17 | Future | 1 |
| 17 | Young Thug | 1 |
| 17 | Coldplay | 1 |
| 17 | Jack Harlow | 1 |
| 17 | Taylor Swift | 1 |