List of Official Albums Streaming Chart number ones of 2015

The Official Albums Streaming Chart is a weekly music chart in the United Kingdom which calculates the most popular albums on audio streaming sites. It was first launched in March 2015 and the first album to top the chart was Ed Sheeran's x. These are the albums which were number one on the chart in 2015.

Number ones

Key

No.	nth album to top the Official Albums Streaming Chart
re	Return of an album to number one
†	Most-streamed album of the year

Contents

No.	Artist[a]	Album[a]	Record label[b]	Reached number one (for the week ending)[a]	Weeks at number one[a]	Ref.
1	Ed Sheeran	x †	Atlantic	7 March 2015	2	[2]
				14 March 2015		[3]
2	Sam Smith	In the Lonely Hour	Capitol	21 March 2015	1	[4]
3	Kendrick Lamar	To Pimp a Butterfly	Top Dawg	28 March 2015	1	[5]
re	Sam Smith	In the Lonely Hour	Capitol	4 April 2015	1	[6]
re	Ed Sheeran	x †	Atlantic	11 April 2015	5	[7]
				18 April 2015		[8]
				25 April 2015		[9]
				2 May 2015		[10]
				9 May 2015		[11]
4	Mumford & Sons	Wilder Mind	Gentlemen of the Road/Island	16 May 2015	2	[12]
				23 May 2015		[13]
re	Ed Sheeran	x †	Atlantic	30 May 2015	7	[14]
				6 June 2015		[15]
				13 June 2015		[16]
				20 June 2015		[17]
				27 June 2015		[18]
				4 July 2015		[19]
				9 July 2015		[20]
5	Taylor Swift	1989	EMI	16 July 2015	1	[21]
re	Ed Sheeran	x †	Atlantic	23 July 2015	6	[22]
				30 July 2015		[23]
				6 August 2015		[24]
				13 August 2015		[25]
				20 August 2015		[26]
				27 August 2015		[27]
6	Jess Glynne	I Cry When I Laugh	Atlantic	3 September 2015	1	[28]
7	The Weeknd	Beauty Behind the Madness	Republic/XO	10 September 2015	2	[29]
				17 September 2015		[30]
8	Bring Me the Horizon	That's the Spirit	RCA	24 September 2015	1	[31]
re	The Weeknd	Beauty Behind the Madness	Republic/XO	1 October 2015	1	[32]
9	Drake & Future	What a Time to Be Alive	Cash Money/Epic/Republic	8 October 2015	1	[33]
re	Ed Sheeran	x †	Atlantic	15 October 2015	6	[34]
				22 October 2015		[35]
				29 October 2015		[36]
				5 November 2015		[37]
				12 November 2015		[38]
				19 November 2015		[39]
10	Justin Bieber	Purpose	Def Jam	26 November 2015	6	[40]
				3 December 2015		[41]
				10 December 2015		[42]
				17 December 2015		[43]
				24 December 2015		[44]
				31 December 2015		[45]

Notes

1. The artist, song, date of reaching number one and number of weeks at number one are those given by the OCC.
2. The record labels are those given by the OCC.^[1]