Every number one of 2011

20 different songs reached #1. Longest run: We Found Love, 8 weeks in a row.

  1. 1 Firework Katy Perry Jan 1 · 1 week (3 in a row)
  2. 2 Grenade Bruno Mars Jan 8 · 1 week
  3. 3 Firework Katy Perry Jan 15 · 1 week
  4. 4 Grenade Bruno Mars Jan 22 · 1 week
  5. 5 Hold It Against Me Britney Spears Jan 29 · 1 week
  6. 6 Grenade Bruno Mars Feb 5 to Feb 12 · 2 weeks
  7. 7 Black and Yellow Wiz Khalifa Feb 19 · 1 week
  8. 8 Born This Way Lady Gaga Feb 26 to Apr 2 · 6 weeks
  9. 9 E.T. Katy Perry featuring Kanye West Apr 9 to Apr 23 · 3 weeks
  10. 10 S&M Rihanna featuring Britney Spears Apr 30 · 1 week
  11. 11 E.T. Katy Perry featuring Kanye West May 7 to May 14 · 2 weeks
  12. 12 Rolling in the Deep Adele May 21 to Jul 2 · 7 weeks
  13. 13 Give Me Everything Pitbull featuring Ne-Yo, Afrojack and Nayer Jul 9 · 1 week
  14. 14 Party Rock Anthem LMFAO featuring Lauren Bennett and GoonRock Jul 16 to Aug 20 · 6 weeks
  15. 15 Last Friday Night (T.G.I.F.) Katy Perry Aug 27 to Sep 3 · 2 weeks
  16. 16 Moves Like Jagger Maroon 5 featuring Christina Aguilera Sep 10 · 1 week
  17. 17 Someone Like You Adele Sep 17 · 1 week
  18. 18 Moves Like Jagger Maroon 5 featuring Christina Aguilera Sep 24 to Oct 8 · 3 weeks
  19. 19 Someone Like You Adele Oct 15 to Nov 5 · 4 weeks
  20. 20 We Found Love Rihanna featuring Calvin Harris Nov 12 to Dec 31 · 8 weeks

The numbers beside each song count the year's number ones in order. Weeks are counted from the Billboard Hot 100 charts dated in 2011.