List of number-one singles of 1991 (Ireland)
The following is a list of the IRMA's number-one singles of 1991.
| Issue Date | Song | Artist |
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| 3 January | The Christmas No 1 | Zig and Zag |
| 10 January | The Christmas No 1 | Zig and Zag |
| 17 January | Sadeness (Part I) | Enigma |
| 24 January | Do The Bartman | The Simpsons |
| 31 January | Do The Bartman | The Simpsons |
| 7 February | Do The Bartman | The Simpsons |
| 14 February | Do The Bartman | The Simpsons |
| 21 February | Do The Bartman | The Simpsons |
| 28 February | Do The Bartman | The Simpsons |
| 7 March | Do The Bartman | The Simpsons |
| 14 March | Do The Bartman | The Simpsons |
| 21 March | Do The Bartman | The Simpsons |
| 28 March | Rhythm of My Heart | Rod Stewart |
| 4 April | Deep Deep Trouble | The Simpsons |
| 11 April | Deep Deep Trouble | The Simpsons |
| 18 April | Deep Deep Trouble | The Simpsons |
| 25 April | Deep Deep Trouble | The Simpsons |
| 2 May | The Shoop Shoop Song (It's In His Kiss) | Cher |
| 9 May | The Shoop Shoop Song (It's In His Kiss) | Cher |
| 16 May | The Shoop Shoop Song (It's In His Kiss) | Cher |
| 23 May | The Shoop Shoop Song (It's In His Kiss) | Cher |
| 30 May | The Shoop Shoop Song (It's In His Kiss) | Cher |
| 6 June | The Shoop Shoop Song (It's In His Kiss) | Cher |
| 13 June | Light My Fire | The Doors |
| 20 June | Light My Fire | The Doors |
| 27 June | Any Dream Will Do | Jason Donovan |
| 4 July | (Everything I Do) I Do It for You | Bryan Adams |
| 11 July | Everything I Do (I Do It For You) | Bryan Adams |
| 18 July | Everything I Do (I Do It For You) | Bryan Adams |
| 25 July | Everything I Do (I Do It For You) | Bryan Adams |
| 1 August | Everything I Do (I Do It For You) | Bryan Adams |
| 8 August | Everything I Do (I Do It For You) | Bryan Adams |
| 15 August | Everything I Do (I Do It For You) | Bryan Adams |
| 22 August | Everything I Do (I Do It For You) | Bryan Adams |
| 29 August | Everything I Do (I Do It For You) | Bryan Adams |
| 5 September | Everything I Do (I Do It For You) | Bryan Adams |
| 12 September | Hay Wrap | The Saw Doctors |
| 19 September | Don't Cry | Guns N' Roses |
| 26 September | Don't Cry | Guns N' Roses |
| 3 October | I'm Too Sexy | Right Said Fred |
| 10 October | (Everything I Do) I Do It for You | Bryan Adams |
| 17 October | Always Look On The Bright Side Of Life | Monty Python |
| 24 October | The Fly | U2 |
| 31 October | The Fly | U2 |
| 7 November | The Fly | U2 |
| 14 November | Zigzagging | Zig and Zag |
| 21 November | Zigzagging | Zig and Zag |
| 28 November | Black or White | Michael Jackson |
| 5 December | Zigzagging | Zig and Zag |
| 12 December | Mysterious Ways | U2 |
| 19 December | Bohemian Rhapsody | Queen |
| 26 December | Bohemian Rhapsody | Queen |
- 18 number ones
- Most number ones: Zig and Zag, The Simpsons, U2 (2)
- Most weeks at number one (artist): The Simpsons (13 weeks)
- Most weeks at number one (single): "Everything I Do (I Do it for You)" - Bryan Adams (11 weeks)
See also
Irish music charts |
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| | Charts | |
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| | Number-one singles | |
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| | Number-one albums | |
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| | Top 10 singles | |
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| | Top selling | |
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| | Dance | |
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