2011

Issue date 	Song 	Artist(s)
January 1 	"Firework" 	Katy Perry
January 8 	"Firework" 	Katy Perry
January 15 	"Grenade" 	Bruno Mars
January 22 	"Grenade" 	Bruno Mars
January 29 	"Hold It Against Me" 	Britney Spears
February 5 	"Grenade" 	Bruno Mars
February 12 	"Grenade" 	Bruno Mars
February 19 	"Price Tag" 	Jessie J featuring B.o.B
February 26 	"Price Tag" 	Jessie J featuring B.o.B
March 5 	"Black and Yellow" 	Wiz Khalifa
March 12 	"Born This Way" 	Lady Gaga
March 19 	"Born This Way" 	Lady Gaga
March 26 	"Born This Way" 	Lady Gaga
April 2 	"Born This Way" 	Lady Gaga
April 9 	"E.T." 	Katy Perry featuring Kanye West
April 16 	"E.T." 	Katy Perry featuring Kanye West
April 23 	"E.T." 	Katy Perry featuring Kanye West
April 30 	"On the Floor" 	Jennifer Lopez featuring Pitbull
May 7 	"On the Floor" 	Jennifer Lopez featuring Pitbull
May 14 	"On the Floor" 	Jennifer Lopez featuring Pitbull
May 21 	"Party Rock Anthem" 	LMFAO featuring Lauren Bennett and GoonRock
May 28 	"Party Rock Anthem" 	LMFAO featuring Lauren Bennett and GoonRock
June 4 	"Party Rock Anthem" 	LMFAO featuring Lauren Bennett and GoonRock
June 11 	"Party Rock Anthem" 	LMFAO featuring Lauren Bennett and GoonRock
June 18 	"S&M" 	Rihanna featuring Britney Spears
June 25 	"Rolling in the Deep" 	Adele
July 2 	"Rolling in the Deep" 	Adele
July 9 	"Rolling in the Deep" 	Adele
July 16 	"Rolling in the Deep" 	Adele
July 23 	"Rolling in the Deep" 	Adele
July 30 	"Rolling in the Deep" 	Adele
August 6 	"The Lazy Song" 	Bruno Mars
August 13 	"The Lazy Song" 	Bruno Mars
August 20 	"Give Me Everything" 	Pitbull featuring Ne-Yo, Afrojack and Nayer
August 27 	"Give Me Everything" 	Pitbull featuring Ne-Yo, Afrojack and Nayer
September 2 	"Glad You Came" 	The Wanted
September 9 	"Last Friday Night (T.G.I.F.)	Katy Perry
September 16	"Last Friday Night (T.G.I.F.)	Katy Perry
September 23	"Moves Like Jagger" 	Maroon 5 featuring Christina Aguilera
September 30	"Moves Like Jagger" 	Maroon 5 featuring Christina Aguilera
October 7 	"Moves Like Jagger" 	Maroon 5 featuring Christina Aguilera
October 14 	"Moves Like Jagger" 	Maroon 5 featuring Christina Aguilera
October 21 	"Someone Like You" 	Adele
October 28 	"Someone Like You" 	Adele
November 4 	"Someone Like You" 	Adele
November 11 	"Someone Like You" 	Adele
November 18 	"What Makes You Beautiful" 	One Direction
November 25 	"What Makes You Beautiful" 	One Direction
December 2 	"We Found Love" 	Rihanna featuring Calvin Harris
December 9 	"We Found Love" 	Rihanna featuring Calvin Harris
December 16 	"We Found Love" 	Rihanna featuring Calvin Harris
December 23 	"We Found Love" 	Rihanna featuring Calvin Harris
December 30 	"We Found Love" 	Rihanna featuring Calvin Harris