- Source: List of number-one singles of 2021 (Ireland)
- Ed Sheeran
- Nicki Minaj
- Lana Del Rey
- One Kiss
- Diskografi Dua Lipa
- Gwen Stefani
- Little Mix
- Lady Gaga
- All the Small Things
- Daftar penghargaan dan nominasi yang diterima oleh Taylor Swift
- List of number-one singles of 2021 (Ireland)
- Lists of UK singles chart number ones
- List of number-one singles of 1985 (Ireland)
- List of Irish Singles Chart Christmas number ones
- Lists of UK number one singles
- Irish Singles Chart
- List of number-one albums of 2021 (Ireland)
- List of number-one singles and albums in Sweden
- UK Independent Singles and Albums Charts
- List of songs that reached number one on the Irish Singles Chart
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.
Number-one artists
See also
List of number-one albums of 2021 (Ireland)
List of top 10 singles in 2021 (Ireland)