List of number-one albums of 2015 (Ireland)
# List of number-one albums of 2015 (Ireland)

The Irish Albums Chart ranks the best-performing albums in Ireland, as compiled by Chart-Track on behalf of the Irish Recorded Music Association.

| Issue date | Album | Artist |
| - | - | - |
| 1 January | x | Ed Sheeran |
| 8 January | x | Ed Sheeran |
| 15 January | x | Ed Sheeran |
| 22 January | Hozier | Hozier |
| 29 January | x | Ed Sheeran |
| 5 February | Shadows in the Night | Bob Dylan |
| 12 February | Coming Up for Air | Kodaline |
| 19 February | In the Lonely Hour | Sam Smith |
| 26 February | x | Ed Sheeran |
| 5 March | Chasing Yesterday | Noel Gallagher's High Flying Birds |
| 12 March | x | Ed Sheeran |
| 19 March | Hozier | Hozier |
| 26 March | Chaos and the Calm | James Bay |
| 2 April | Chaos and the Calm | James Bay |
| 9 April | Hozier | Hozier |
| 16 April | Darling Arithmetic | Villagers |
| 23 April | Stories from the Surface | Ham Sandwich |
| 30 April | The Magic Whip | Blur |
| 7 May | Wilder Mind | Mumford & Sons |
| 14 May | Beautiful Life | Nathan Carter |
| 21 May | Beautiful Life | Nathan Carter |
| 28 May | Beautiful Life | Nathan Carter |
| 4 June | How Big, How Blue, How Beautiful | Florence and the Machine |
| 11 June | Drones | Muse |
| 18 June | How Big, How Blue, How Beautiful | Florence and the Machine |
| 25 June | How Big, How Blue, How Beautiful | Florence and the Machine |
| 2 July | 1989 | Taylor Swift |
| 9 July | 1989 | Taylor Swift |
| 16 July | Communion | Years & Years |
| 23 July | x | Ed Sheeran |
| 30 July | x | Ed Sheeran |
| 6 August | x | Ed Sheeran |
| 13 August | Compton | Dr. Dre |
| 20 August | x | Ed Sheeran |
| 27 August | Little Victories | The Strypes |
| 3 September | Here and Now | Ryan Sheridan |
| 10 September | One Good Night | Derek Ryan |
| 17 September | x | Ed Sheeran |
| 24 September | Honeymoon | Lana Del Rey |
| 1 October | Right Here | Shane Filan |
| 8 October | Joyland | Keywest |
| 15 October | Joyland | Keywest |
| 22 October | x | Ed Sheeran |
| 29 October | Sounds Good Feels Good | 5 Seconds of Summer |
| 5 November | x | Ed Sheeran |
| 12 November | Get Weird | Little Mix |
| 19 November | Made in the A.M. | One Direction |
| 26 November | 25 | Adele |
| 3 December | 25 | Adele |
| 10 December | 25 | Adele |
| 17 December | 25 | Adele |
| 24 December | 25 | Adele |
| 31 December | 25 | Adele |
