# List of number-one singles of 2017 (Ireland)

The Irish Singles Chart ranks the best-performing singles in Ireland, as compiled by the Official Charts Company on behalf of the Irish Recorded Music Association.
| Issue date | Song | Artist(s) |
| 6 January | "Rockabye" | Clean Bandit featuring Sean Paul and Anne-Marie |
| 13 January | "Shape of You" | Ed Sheeran |
| 20 January | "Shape of You" | Ed Sheeran |
| 27 January | "Shape of You" | Ed Sheeran |
| 3 February | "Shape of You" | Ed Sheeran |
| 10 February | "Shape of You" | Ed Sheeran |
| 17 February | "Shape of You" | Ed Sheeran |
| 24 February | "Shape of You" | Ed Sheeran |
| 3 March | "Shape of You" | Ed Sheeran |
| 10 March | "Galway Girl" | Ed Sheeran |
| 17 March | "Galway Girl" | Ed Sheeran |
| 24 March | "Shape of You" | Ed Sheeran |
| 31 March | "Shape of You" | Ed Sheeran |
| 7 April | "Shape of You" | Ed Sheeran |
| 14 April | "Shape of You" | Ed Sheeran |
| 21 April | "Shape of You" | Ed Sheeran |
| 28 April | "Shape of You" | Ed Sheeran |
| 5 May | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 12 May | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 19 May | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 26 May | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 2 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 9 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 16 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 23 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 30 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 7 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 14 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 21 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 28 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 4 August | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 11 August | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber |
| 18 August | "New Rules" | Dua Lipa |
| 25 August | "New Rules" | Dua Lipa |
| 1 September | "Look What You Made Me Do" | Taylor Swift |
| 8 September | "New Rules" | Dua Lipa |
| 15 September | "New Rules" | Dua Lipa |
| 22 September | "New Rules" | Dua Lipa |
| 29 September | "New Rules" | Dua Lipa |
| 6 October | "New Rules" | Dua Lipa |
| 13 October | "New Rules" | Dua Lipa |
| 20 October | "Rockstar" | Post Malone featuring 21 Savage |
| 27 October | "Rockstar" | Post Malone featuring 21 Savage |
| 3 November | "Havana" | Camila Cabello featuring Young Thug |
| 10 November | "Havana" | Camila Cabello featuring Young Thug |
| 17 November | "Havana" | Camila Cabello featuring Young Thug |
| 24 November | "Havana" | Camila Cabello featuring Young Thug |
| 1 December | "Havana" | Camila Cabello featuring Young Thug |
| 8 December | "Perfect" | Ed Sheeran |
| 15 December | "Perfect" | Ed Sheeran |
| 22 December | "Perfect" | Ed Sheeran |
| 29 December | "Perfect" | Ed Sheeran |

## Number-one artists

| Position | Artist | Weeks at No. 1 |
| 1 | Ed Sheeran | 20 |
| 2 | Luis Fonsi | 15 |
| 2 | Daddy Yankee | 15 |
| 2 | Justin Bieber | 15 |
| 5 | Dua Lipa | 8 |
| 6 | Camila Cabello | 5 |
| 6 | Young Thug | 5 |
| 8 | Post Malone | 2 |
| 8 | 21 Savage | 2 |
| 10 | Clean Bandit | 1 |
| 10 | Sean Paul | 1 |
| 10 | Anne-Marie | 1 |
| 10 | Taylor Swift | 1 |