List of number-one albums of 2018 (Ireland)
# List of number-one albums of 2018 (Ireland)

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

| Issue date | Album | Artist |
| - | - | - |
| 5 January | ÷ | Ed Sheeran |
| 12 January | ÷ | Ed Sheeran |
| 19 January | Tales from the Backseat | The Academic |
| 26 January | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 2 February | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 9 February | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 16 February | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 23 February | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 2 March | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 9 March | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 16 March | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 23 March | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 30 March | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 6 April | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 13 April | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 20 April | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 27 April | KOD | J. Cole |
| 4 May | Beerbongs & Bentleys | Post Malone |
| 11 May | ÷ | Ed Sheeran |
| 18 May | ÷ | Ed Sheeran |
| 25 May | ÷ | Ed Sheeran |
| 1 June | Wildness | Snow Patrol |
| 8 June | Ye | Kanye West |
| 15 June | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 22 June | Reputation | Taylor Swift |
| 29 June | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 6 July | Scorpion | Drake |
| 13 July | Scorpion | Drake |
| 20 July | Scorpion | Drake |
| 27 July | Mamma Mia! Here We Go Again: The Movie Soundtrack | Various artists |
| 3 August | Mamma Mia! Here We Go Again: The Movie Soundtrack | Various artists |
| 10 August | Mamma Mia! Here We Go Again: The Movie Soundtrack | Various artists |
| 17 August | Mamma Mia! Here We Go Again: The Movie Soundtrack | Various artists |
| 24 August | Sweetener | Ariana Grande |
| 31 August | Sweetener | Ariana Grande |
| 7 September | Kamikaze | Eminem |
| 14 September | Kamikaze | Eminem |
| 21 September | Kamikaze | Eminem |
| 28 September | Kamikaze | Eminem |
| 5 October | Politics of Living | Kodaline |
| 12 October | A Star Is Born | Lady Gaga and Bradley Cooper |
| 19 October | A Star Is Born | Lady Gaga and Bradley Cooper |
| 26 October | A Star Is Born | Lady Gaga and Bradley Cooper |
| 2 November | A Star Is Born | Lady Gaga and Bradley Cooper |
| 9 November | A Star Is Born | Lady Gaga and Bradley Cooper |
| 16 November | A Star Is Born | Lady Gaga and Bradley Cooper |
| 23 November | A Star Is Born | Lady Gaga and Bradley Cooper |
| 30 November | A Star Is Born | Lady Gaga and Bradley Cooper |
| 7 December | The Greatest Showman: Original Motion Picture Soundtrack | Various artists |
| 14 December | A Star Is Born | Lady Gaga and Bradley Cooper |
| 21 December | A Star Is Born | Lady Gaga and Bradley Cooper |
| 28 December | A Star Is Born | Lady Gaga and Bradley Cooper |

## Number-one artists

| Position | Artist | Weeks at No. 1 |
| - | - | - |
| 1 | Lady Gaga | 11 |
| 1 | Bradley Cooper | 11 |
| 3 | Ed Sheeran | 6 |
| 4 | Eminem | 4 |
| 5 | Drake | 3 |
| 6 | Ariana Grande | 2 |
| 7 | The Academic | 1 |
| 7 | J. Cole | 1 |
| 7 | Post Malone | 1 |
| 7 | Snow Patrol | 1 |
| 7 | Kanye West | 1 |
| 7 | Taylor Swift | 1 |
| 7 | Kodaline | 1 |
