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) Reference 1 January "Paradise" Meduza featuring Dermot Kennedy 8 January 15 January "Drivers License" Olivia Rodrigo 22 January 29 January 5 February 12 February 19 February 26 February 5 March 12 March 19 March "The Business" Tiësto 26 March "Peaches" Justin Bieber featuring Daniel Caesar and Giveon 2 April "Montero (Call Me by Your Name)" Lil Nas X 9 April 16 April 23 April 30 April 7 May "Body" Tion Wayne and Russ Millions 14 May 21 May "Good 4 U" Olivia Rodrigo 28 May 4 June 11 June 18 June 25 June 2 July "Bad Habits" Ed Sheeran 9 July 16 July 23 July 30 July 6 August 13 August 20 August 27 August 3 September 10 September 17 September "Shivers" 24 September 1 October 8 October 15 October 22 October "Easy on Me" Adele 29 October 5 November 12 November 19 November "All Too Well (Taylor's Version)" Taylor Swift 26 November "Easy on Me" Adele 3 December 10 December 17 December 24 December "Merry Christmas" Ed Sheeran and Elton John 31 December
Number-one artists Position Artist Weeks at No. 1 1 Ed Sheeran 18 2 Olivia Rodrigo 15 3 Adele 9 4 Lil Nas X 5 5 Meduza 2 Dermot Kennedy Tion Wayne Russ Millions Elton John 9 Tiësto 1 Justin Bieber Daniel Caesar Giveon Taylor Swift
See also List of number-one albums of 2021 (Ireland) List of top 10 singles in 2021 (Ireland)
References