Every number one of 2021

26 different songs reached #1. Longest run: Drivers License, 8 weeks in a row.

  1. 1 All I Want for Christmas Is You Mariah Carey Jan 2 · 1 week
  2. 2 Mood 24kGoldn featuring Iann Dior Jan 9 to Jan 16 · 2 weeks
  3. 3 Drivers License Olivia Rodrigo Jan 23 to Mar 13 · 8 weeks
  4. 4 Search ↗ What's Next Drake Mar 20 · 1 week
  5. 5 Up Cardi B Mar 27 · 1 week
  6. 6 Peaches Justin Bieber featuring Daniel Caesar and Giveon Apr 3 · 1 week
  7. 7 Montero (Call Me by Your Name) Lil Nas X Apr 10 · 1 week
  8. 8 Leave the Door Open Silk Sonic (Bruno Mars and Anderson .Paak) Apr 17 · 1 week
  9. 9 Rapstar Polo G Apr 24 to May 1 · 2 weeks
  10. 10 Save Your Tears The Weeknd and Ariana Grande May 8 to May 15 · 2 weeks
  11. 11 Leave the Door Open Silk Sonic (Bruno Mars and Anderson .Paak) May 22 · 1 week
  12. 12 Good 4 U Olivia Rodrigo May 29 · 1 week
  13. 13 Butter BTS Jun 5 to Jul 17 · 7 weeks
  14. 14 Search ↗ Permission to Dance BTS Jul 24 · 1 week
  15. 15 Butter BTS Jul 31 to Aug 7 · 2 weeks
  16. 16 Stay The Kid Laroi and Justin Bieber Aug 14 to Sep 4 · 4 weeks
  17. 17 Butter BTS Sep 11 · 1 week
  18. 18 Search ↗ Way 2 Sexy Drake featuring Future and Young Thug Sep 18 · 1 week
  19. 19 Stay The Kid Laroi and Justin Bieber Sep 25 to Oct 2 · 2 weeks
  20. 20 Search ↗ My Universe Coldplay and BTS Oct 9 · 1 week
  21. 21 Stay The Kid Laroi and Justin Bieber Oct 16 · 1 week
  22. 22 Industry Baby Lil Nas X and Jack Harlow Oct 23 · 1 week
  23. 23 Easy on Me Adele Oct 30 to Nov 20 · 4 weeks
  24. 24 Search ↗ All Too Well (Taylor's Version) Taylor Swift Nov 27 · 1 week
  25. 25 Easy on Me Adele Dec 4 to Dec 18 · 3 weeks
  26. 26 All I Want for Christmas Is You Mariah Carey Dec 25 · 1 week (3 in a row)

The numbers beside each song count the year's number ones in order. Weeks are counted from the Billboard Hot 100 charts dated in 2021.