Billboard 2011 Number One Songs

Date Artist - Title Weeks at #1

December 12 2010 – January 1 2011 Katy Perry - Firework 4 (3)

January 2 – 8 2011 Bruno Mars - Grenade 4 (1)

January 9 – 15 2011 Katy Perry - Firework 4 (1)

January 16 – 22 2011 Bruno Mars - Grenade 4 (1)

January 23 – 29 2011 Britney Spears - Hold It Against Me 1

January 30 – February 12 2011 Bruno Mars - Grenade 4 (2)

February 13 – 19 2011 Wiz Khalifa - Black And Yellow 1

February 20 – April 2 2011 Lady Gaga - Born This Way 6

April 3 – 23 2011 Katy Perry feat. Kanye West - E.T. 5 (3)

April 24 – 30 2011 Rihanna - S&M 1

May 1 – 14 2011 Katy Perry feat. Kanye West - E.T. 5 (2)

May 15 – July 2 2011 Adele - Rolling In The Deep 7

July 3 – 9 2011 Pitbull feat. Ne-Yo, Afrojack and Nayer - Give Me Everything 1

July 10 – August 20 2011 LMFAO feat. Lauren Bennett and GoonRock - Party Rock Anthem 6

August 21 – September 3 2011 Katy Perry - Last Friday Night (T.G.I.F.) 2

September 4 – 10 2011 Maroon 5 feat. Christina Aguilera - Moves Like Jagger 4 (1)

September 11 – 17 2011 Adele - Someone Like You 5 (1)

September 18 – October 8 2011 Maroon 5 feat. Christina Aguilera - Moves Like Jagger 4 (3)

October 9 – November 5 2011 Adele - Someone Like You 5 (4)

November 6 – Rihanna feat. Calvin Harris - We Found Love 8