2021 Billboard Number One Hits:

Sidenote: The best-selling song of 2021 was Levitating by Dua Lipa, which peaked at number two on May 22, 2021.

December 27, 2020 – January 2, 2021: All I Want for Christmas Is You – Mariah Carey
January 3 – January 9, 2021: Mood – 24kGoldn featuring Iann Dior
January 10 – March 20, 2021: Drivers License – Olivia Rodrigo
March 21 – March 27, 2021: What’s Next – Drake
March 28 – April 3, 2021: Up – Cardi B
April 4 – April 17, 2021: Montero (Call Me by Your Name) – Lil Nas X
April 18 – May 8, 2021: Rapstar – Polo G
May 9 – May 22, 2021: Save Your Tears – The Weeknd and Ariana Grande
May 23 – June 5, 2021: Good 4 U – Olivia Rodrigo
June 6 – July 17, 2021: Butter – BTS
July 18 – July 24, 2021: Permission to Dance – BTS
July 25 – September 11, 2021: Stay – The Kid Laroi and Justin Bieber
September 12 – October 2, 2021: Butter – BTS
October 3 – October 9, 2021: My Universe – Coldplay and BTS
October 10 – October 30, 2021: Stay – The Kid Laroi and Justin Bieber
October 31 – November 20, 2021: Industry Baby – Lil Nas X and Jack Harlow
November 21 – December 25, 2021: Easy on Me – Adele
December 26, 2021 – January 1, 2022: All I Want for Christmas Is You – Mariah Carey