This is a list of singles which have reached number one on the Irish Singles Chart in 1980.
| Week ending | Song | Artist |
|---|---|---|
| 5 January | "Another Brick in the Wall (Part 2)" | Pink Floyd |
| 12 January | ||
| 19 January | "Totus Tuus (Totally Yours)" | Dana |
| 26 January | "Brass in Pocket" | The Pretenders |
| 2 February | ||
| No charts exist for 34 weeks due to a strike.[1] | ||
| 4 October | "Don't Stand So Close to Me" | The Police |
| 11 October | ||
| 18 October | ||
| 25 October | ||
| 1 November | "Woman in Love" | Barbra Streisand |
| 8 November | ||
| 15 November | ||
| 22 November | ||
| 29 November | "Super Trouper" | ABBA |
| 6 December | ||
| 13 December | ||
| 20 December | "There's No-one Quite Like Grandma" | St Winifred's School Choir |
| 27 December | ||
Hot Press magazine published fortnightly charts during the strike period. This information is now used by http://www.irishcharts.ie/. The number ones from this period (one every two weeks) were as follows...
| Fortnight ending | Song | Artist |
|---|---|---|
| 12 February | "Brass in Pocket" | The Pretenders[2] |
| 26 February | "Coward of the County" | Kenny Rogers[3] |
| 13 March[4] | ||
| 27 March | "Take That Look Off Your Face" | Marti Webb[5] |
| 10 April[6] | ||
| 24 April[7] | ||
| 8 May | "Working My Way Back to You" | Detroit Spinners[8] |
| 22 May | "What's Another Year" | Johnny Logan[9] |
| 5 June[10] | ||
| 19 June[11] | ||
| 2 July | "Theme from MASH" | The MASH[12] |
| 16 July | "Crying" | Don McLean[13] |
| 30 July | "Xanadu" | Olivia Newton-John and Electric Light Orchestra[14] |
| 13 August[15] | ||
| 27 August[16] | ||
| 10 September | "The Winner Takes It All" | ABBA[17] |
| 25 September | "Start!" | The Jam[18] |
| 2 October | "Feels Like I'm in Love" | Kelly Marie |