List of Billboard Mainstream Top 40 number-one songs of 2015

This is a list of the U.S. Billboard magazine Mainstream Top 40 number-one songs of 2015.

During 2015, a total of 19 singles hit number-one on the charts.

Chart history

Key

†	Indicates best-performing single of 2015[1]

Issue date	Song	Artist(s)	Ref.
January 3	"Blank Space"	Taylor Swift	[2]
January 10			[3]
January 17			[4]
January 24			[5]
January 31			[6]
February 7	"Uptown Funk" †	Mark Ronson featuring Bruno Mars	[7]
February 14			[8]
February 21			[9]
February 28			[10]
March 7			[11]
March 14			[12]
March 21	"Thinking Out Loud"	Ed Sheeran	[13]
March 28	"Style"	Taylor Swift	[14]
April 4			[15]
April 11			[16]
April 18	"Sugar"	Maroon 5	[17]
April 25			[18]
May 2	"Love Me Like You Do"	Ellie Goulding	[19]
May 9			[20]
May 16			[21]
May 23	"Earned It"	The Weeknd	[22]
May 30	"See You Again"	Wiz Khalifa featuring Charlie Puth	[23]
June 6			[24]
June 13			[25]
June 20			[26]
June 27	"Want to Want Me"	Jason Derulo	[27]
July 4	"Bad Blood"	Taylor Swift featuring Kendrick Lamar	[28]
July 11			[29]
July 18			[30]
July 25			[31]
August 1			[32]
August 8	"Cheerleader" (Felix Jaehn Remix)	OMI	[33]
August 15			[34]
August 22	"Can't Feel My Face"	The Weeknd	[35]
August 29			[36]
September 5			[37]
September 12			[38]
September 19	"Lean On"	Major Lazer and DJ Snake featuring MØ	[39]
September 26	"Good for You"	Selena Gomez featuring A$AP Rocky	[40]
October 3			[41]
October 10	"Locked Away"	R. City featuring Adam Levine	[42]
October 17			[43]
October 24	"What Do You Mean?"	Justin Bieber	[44]
October 31			[45]
November 7	"Wildest Dreams"	Taylor Swift	[46]
November 14			[47]
November 21	"Stitches"	Shawn Mendes	[48]
November 28			[49]
December 5	"Hello"	Adele	[50]
December 12			[51]
December 19			[52]
December 26			[53]

See also

• 2015 in American music