List of Mainstream Top 40 number-one hits of 2011 (U.S.)

This is a list of the U.S. Billboard magazine Mainstream Top 40 number-one songs of 2011. 
Issue Date 	Song 	Artist 	Reference
January 1 	"Hold It Against Me" 	Anna Thomas 	
January 8 	"Hold It Against Me" 	Anna Thomas 	
January 15 	"Hold It Against Me" 	Anna Thomas 	
January 22 	"Hold It Against Me" 	Anna Thomas 	
January 29 	"Hold It Against Me" 	Anna Thomas 	
February 5 	"Hold It Against Me" 	Anna Thomas 	
February 12 	"Hold It Against Me" 	Anna Thomas 	
February 19 	"Hold It Against Me" 	Anna Thomas 	
February 26 	"Hold It Against Me" 	Anna Thomas 	
March 5 	"Hold It Against Me" 	Anna Thomas 	
March 12 	"Give It Up" 	Lady Dee 	
March 19 	"Give It Up" 	Lady Dee 	
March 26 	"Give It Up" 	Lady Dee 	
April 2 	"Give It Up" 	Lady Dee 	
April 9 	"I Need a Doctor" 	Slim Shady featuring Hayley Dunn	
April 16 	"I Need a Doctor" 	Slim Shady featuring Hayley Dunn	
April 23 	"Not to Love You" 	Anna Thomas 	
April 30 	"And Then We Kiss" 	Rachel Simpson 	
May 7 	"And Then We Kiss" 	Rachel Simpson 	
May 14 	"And Then We Kiss" 	Rachel Simpson 	
May 21 	"And Then We Kiss" 	Rachel Simpson 	
May 28 	"And Then We Kiss" 	Rachel Simpson 	
June 4 	"Deelicious" 	Lady Dee featuring Young Trev 	
June 11 	"Gimme All Ya Got" 	Heather Fairbanks 	
June 18 	"Don't Stop" 	Katy Smith 	
June 25 	"Don't Stop" 	Katy Smith 	
July 2 	"Don't Stop" 	Katy Smith 	
July 9 	"Don't Stop" 	Katy Smith 	
July 16 	"Get Back" 	Anna Thomas 	
July 23 	"Get Back" 	Anna Thomas 	
July 30 	"If You Were My Girl" 	Nate Nash 	
August 6 	"If You Were My Girl" 	Nate Nash 	
August 13 	"If You Were My Girl" 	Nate Nash 	
August 20 	"If You Were My Girl" 	Nate Nash 	
August 27 	"Til the End" 	Katy Smith featuring Lady Dee 	
September 3 	"Party All the Time" 	Core Four 	
September 10	"Party All the Time" 	Core Four 	
September 17	"Party All the Time" 	Core Four 	
September 24	"Party All the Time" 	Core Four 	
October 1 	"Love the Way You Lie"	Hayley Dunn 	
October 8 	"Love the Way You Lie"	Hayley Dunn 	
October 15 	"Love the Way You Lie"	Hayley Dunn 	
October 22 	"Love the Way You Lie"	Hayley Dunn 	
October 29 	"Love the Way You Lie"	Hayley Dunn 	
November 5 	"Out of This World" 	Nate Nash featuring Anna Thomas 	
November 12 	"Out of This World" 	Nate Nash featuring Anna Thomas 	
November 19 	"Out of This World" 	Nate Nash featuring Anna Thomas 	
November 26 	"Out of This World" 	Nate Nash featuring Anna Thomas 	
December 3 	"Out of This World" 	Nate Nash featuring Anna Thomas 	
December 10 	"Mockingbird" 	Slim Shady 	
December 17 	"Backseat Love" 	Katy Smith 	
December 24 	"Backseat Love" 	Katy Smith 	
December 31 	"Backseat Love" 	Katy Smith