List of Billboard Hot 100 number ones of 2015

The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Its data, compiled by Nielsen SoundScan and published by Billboard magazine, is based collectively on each single's weekly physical and digital sales, as well as airplay and streaming.

"Uptown Funk" by Mark Ronson (pictured) featuring Bruno Mars spent fourteen weeks at number one, becoming the second longest-running number-one single since the chart's inception in 1940. It later ranked as the best-performing single of the year.

During 2015, eight singles reached number one on the Hot 100; a ninth single, "Blank Space" by Taylor Swift, began its run at number one in November 2014.^[1] Of those nine number-one singles, three were collaborations. In total, ten acts topped the chart as either lead or featured artists, with six—Mark Ronson, Charlie Puth, Kendrick Lamar, Omi, The Weeknd and Justin Bieber—achieving their first Hot 100 number-one single. Mark Ronson and Bruno Mars' "Uptown Funk" was the longest-running number-one of the year, leading the chart for fourteen weeks; it subsequently topped the Billboard Year-End Hot 100.^[2]

Chart history

Taylor Swift (pictured) earned her third and fourth number-one singles with "Blank Space" and "Bad Blood".

The Weeknd (pictured) earned his first and second number-one singles with "Can't Feel My Face" and "The Hills".

Wiz Khalifa (pictured) earned his second number-one single with "See You Again". It spent 12 weeks at number-one, tying with "Lose Yourself" and "Boom Boom Pow" as the longest-leading rap single.

"What Do You Mean?" by Justin Bieber (pictured) debuted at number one, becoming the twenty-third song to do so.

Adele (pictured)'s "Hello" debuted at number one, becoming the twenty-fourth song to do so, and the fourth Adele song to top the Billboard Hot 100.

Key

†	Indicates best-performing single of 2015

No.	Issue date	Song	Artist(s)	Ref.
1040	January 3	"Blank Space"	Taylor Swift	[3][4]
	January 10			[5][6]
1041	January 17	"Uptown Funk" †	Mark Ronson featuring Bruno Mars	[7][8]
	January 24			[9][10]
	January 31			[11][12]
	February 7			[13][14]
	February 14			[15][16]
	February 21			[17][18]
	February 28			[19][20]
	March 7			[21][22]
	March 14			[23][24]
	March 21			[25][26]
	March 28			[27][28]
	April 4			[29][30]
	April 11			[31][32]
	April 18			[33][34]
1042	April 25	"See You Again"	Wiz Khalifa featuring Charlie Puth	[35][36]
	May 2			[37][38]
	May 9			[39][40]
	May 16			[41][42]
	May 23			[43][44]
	May 30			[45][46]
1043	June 6	"Bad Blood"	Taylor Swift featuring Kendrick Lamar	[47][48]
re	June 13	"See You Again"	Wiz Khalifa featuring Charlie Puth	[49][50]
	June 20			[51][52]
	June 27			[53][54]
	July 4			[55][56]
	July 11			[57][58]
	July 18			[59][60]
1044	July 25	"Cheerleader"	Omi	[61][62]
	August 1			[63][64]
	August 8			[65][66]
	August 15			[67][68]
1045	August 22	"Can't Feel My Face"	The Weeknd	[69][70]
re	August 29	"Cheerleader"	Omi	[71][72]
	September 5			[73][74]
re	September 12	"Can't Feel My Face"	The Weeknd	[75][76]
1046	September 19	"What Do You Mean?"	Justin Bieber	[77][78]
re	September 26	"Can't Feel My Face"	The Weeknd	[79][80]
1047	October 3	"The Hills"		[81][82]
	October 10			[83][84]
	October 17			[85][86]
	October 24			[87][88]
	October 31			[89][90]
	November 7			[91][92]
1048	November 14	"Hello"	Adele	[93][94]
	November 21			[95][96]
	November 28			[97][98]
	December 5			[99][100]
	December 12			[101][102]
	December 19			[103][104]
	December 26			[105][106]

Number-one artists

List of number-one artists by total weeks at number one

Position	Artist	Weeks at No. 1
1	Mark Ronson	14
	Bruno Mars
3	Wiz Khalifa	12
	Charlie Puth
5	The Weeknd	9
6	Adele	7
7	Omi	6
8	Taylor Swift	3
9	Kendrick Lamar	1
	Justin Bieber

See also

• 2015 in American music
• List of Billboard 200 number-one albums of 2015
• List of Billboard Hot 100 top-ten singles in 2015
• List of Billboard Hot 100 number-one singles of the 2010s