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