List of Billboard Mainstream Top 40 number-one songs of 2011
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This is a list of songs which reached number one on the Billboard Mainstream Top 40 (or Pop Songs) chart in 2011.
During 2011, a total of 18 singles hit number-one on the charts.
Chart history
| † | Indicates best-performing single of 2011 |
| Issue date | Song | Artist(s) | Ref. |
|---|---|---|---|
| January 1 | "Raise Your Glass" | P!nk | [1] |
| January 8 | "Firework" | Katy Perry | [2] |
| January 15 | [3] | ||
| January 22 | [4] | ||
| January 29 | [5] | ||
| February 5 | "Grenade" | Bruno Mars | [6] |
| February 12 | [7] | ||
| February 19 | [8] | ||
| February 26 | [9] | ||
| March 5 | [10] | ||
| March 12 | "Tonight (I'm Lovin' You)" | Enrique Iglesias featuring Ludacris & DJ Frank E | [11] |
| March 19 | [12] | ||
| March 26 | "Fuckin' Perfect" | P!nk | [13] |
| April 2 | [14] | ||
| April 9 | "Born This Way" | Lady Gaga | [15] |
| April 16 | "Fuck You (Forget You)" | Cee Lo Green | [16] |
| April 23 | "S&M" | Rihanna | [17] |
| April 30 | "E.T." | Katy Perry featuring Kanye West | [18] |
| May 7 | [18] | ||
| May 14 | [18] | ||
| May 21 | [19] | ||
| May 28 | [20] | ||
| June 4 | [20] | ||
| June 11 | "Rolling in the Deep" | Adele | [20] |
| June 18 | [21] | ||
| June 25 | [22] | ||
| July 2 | [23] | ||
| July 9 | [24] | ||
| July 16 | "Give Me Everything" | Pitbull featuring Ne-Yo, Afrojack & Nayer | [18] |
| July 23 | [25] | ||
| July 30 | [26] | ||
| August 6 | "Party Rock Anthem" † | LMFAO featuring Lauren Bennett & GoonRock | [27] |
| August 13 | "Last Friday Night (T.G.I.F.)" | Katy Perry | [28] |
| August 20 | [29] | ||
| August 27 | [30] | ||
| September 3 | [31] | ||
| September 10 | [32] | ||
| September 17 | [33] | ||
| September 24 | "I Wanna Go" | Britney Spears | [34] |
| October 1 | "Moves Like Jagger" | Maroon 5 featuring Christina Aguilera | [35] |
| October 8 | [19] | ||
| October 15 | [19] | ||
| October 22 | [19] | ||
| October 29 | [36] | ||
| November 5 | [37] | ||
| November 12 | "Stereo Hearts" | Gym Class Heroes featuring Adam Levine | [38] |
| November 19 | [39] | ||
| November 26 | [40] | ||
| December 3 | "Without You" | David Guetta featuring Usher | [40] |
| December 10 | "We Found Love" | Rihanna featuring Calvin Harris | [41] |
| December 17 | [42] | ||
| December 24 | [43] | ||
| December 31 | [44] |