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This is a list of the Irish Recorded Music Association's Irish Singles Chart Top 50 number-ones of 2007.
| Issue date | Song | Artist |
|---|---|---|
| 4 January [1] | "A Moment Like This" | Leona Lewis |
| 11 January [2] | ||
| 18 January [3] | ||
| 25 January [4] | ||
| 1 February [5] | "Grace Kelly" | Mika |
| 8 February [6] | ||
| 15 February [7] | ||
| 22 February [8] | ||
| 1 March | ||
| 8 March [9] | ||
| 15 March [9] | ||
| 22 March | "Give Me a Minute" | 21 Demands |
| 29 March [10] | "How to Save a Life" | The Fray |
| 5 April [10] | "Girlfriend" | Avril Lavigne |
| 12 April [11] | ||
| 19 April | "Beautiful Liar" | Beyoncé and Shakira |
| 26 April | "Like Only a Woman Can" | Brian McFadden |
| 3 May | "Beautiful Liar" | Beyoncé and Shakira |
| 10 May | "Girlfriend" | Avril Lavigne |
| 17 May | "Don't Matter" | Akon |
| 24 May | "Umbrella" | Rihanna featuring Jay-Z |
| 31 May | ||
| 7 June | ||
| 14 June | ||
| 21 June [12] | ||
| 28 June [12] | ||
| 5 July [13] | ||
| 12 July | ||
| 19 July | "Big Girls Don't Cry" | Fergie |
| 26 July [14] | "The Way I Are" | Timbaland featuring Keri Hilson & D.O.E. |
| 2 August [14] | ||
| 9 August [15] | ||
| 16 August [15] | ||
| 23 August | ||
| 30 August | "Beautiful Girls" | Sean Kingston |
| 6 September | ||
| 13 September [16] | ||
| 20 September [16] | ||
| 27 September [17] | "If That's OK with You" | Shayne Ward |
| 4 October [18] | ||
| 11 October [19] | ||
| 18 October [19] | ||
| 25 October [20] | "Bleeding Love" | Leona Lewis |
| 1 November | ||
| 8 November [21] | ||
| 15 November [21] | ||
| 22 November | ||
| 29 November | ||
| 6 December | ||
| 13 December | ||
| 20 December [22] | "When You Believe" | Leon Jackson |
| 27 December [22] |