The Republic of Ireland national under-21 football team , is the national under-21 football team of the Republic of Ireland and is controlled by the Football Association of Ireland and competes in the biennial European Under-21 Football Championship and has competed since 1978.
As a European U21 team, the Republic of Ireland compete for the European Championship, with the finals every odd-numbered year, formerly even-numbered years. There is no Under-21 World Cup, although there is an Under-20 World Cup. For the first five (1978–1986) European Under-21 Football Championships, Ireland did not enter but in 1988 they entered for the first time but failed to qualify. Ireland have never qualified for the European Under-21 Championships, but under Brian Kerr did win the European Under-18 and Under-16 Championships in 1998.
UEFA European Under-21 Championship Record
|UEFA European Under-21 Football Championship record||UEFA European Under-21 Football Championship Qualification record|
|1978||Did not enter||–||–||–||–||–||–|
|1988||Did not qualify||4||0||2||2||3||7|
|1990||Did not enter||–||–||–||–||–||–|
|1992||Did not qualify||6||1||0||5||5||14|
- *Draws include knockout matches decided by penalty shootout.
Results and fixtures 2017-18
2019 UEFA European Under-21 Football Championship
|2||5||3||1||1||9||3||+6||10||Play-offs if among four best runners-up|
Rules for classification: Qualification tiebreakers
Players born on or after 1 January 1996 are eligible for the next UEFA European Under-21 Football Championship.
The following players were called up for the UEFA European Under-21 Football Championship qualifying match against Norway on 14 November 2017. 
Caps and goals updated as of 9 October 2017.
|#||Pos.||Player||Date of birth (age)||Caps||Goals||Club|
|GK||Kieran O'Hara||22 April 1996||4||0||Manchester United|
|GK||Caoimhin Kelleher||23 November 1998||0||0||Liverpool|
|DF||Shaun Donnellan||16 October 1996||4||0||Walsall (on loan from West Bromwich Albion)|
|DF||Ryan Sweeney||15 April 1997||4||0||Bristol Rovers (on loan from Stoke)|
|DF||Danny Kane||23 April 1997||4||0||Huddersfield Town|
|DF||Corey Whelan||10 December 1997||4||0||Liverpool|
|DF||Declan Rice||14 January 1999||3||0||West Ham|
|DF||Liam Kinsella||23 February 1996||1||0||Walsall|
|DF||Conor Shaughnessy||30 June 1996||1||0||Leeds United|
|MF||Josh Cullen||7 April 1996||12||1||Bolton (on loan from West Ham)|
|MF||Harry Charsley||1 November 1996||11||2||Everton|
|MF||Connor Dimaio||28 January 1996||4||0||Chesterfield|
|MF||Ryan Manning||14 June 1996||4||2||Queens Park Rangers|
|MF||Jake Mulraney||5 April 1996||3||0||Inverness Caledonian Thistle|
|MF||Connor Ronan||6 March 1998||1||0||Wolves|
|MF||Rory Hale||27 November 1996||0||0||Derry City|
|FW||Ronan Curtis||29 March 1996||4||0||Derry City|
|FW||Joe Quigley||10 December 1996||2||0||Newport (on loan from Bournemouth)|
The following players have also been called up to the Republic of Ireland under-21 squad and remain eligible:
|Pos.||Player||Date of birth (age)||Caps||Goals||Club||Latest call-up|
|GK||Liam Bossin||15 July 1996||2||0||Nottingham Forest||v. Israel, 9 October 2017|
|DF||Ryan Delaney||6 September 1996||1||0||Burton||v. Israel, 9 October 2017|
|DF||Connor O'Grady||5 December 1997||0||0||Sheffield Wednesday||v. Kosovo, 25 March 2017|
|DF||Kevin Toner||18 July 1996||0||0||Stevenage (on loan from Aston Villa)||v. Serbia, 6 September 2016|
|DF||Noe Baba||8 August 1996||1||0||Birmingham||v. Norway, 17 Norway 2015|
|DF||Dan Cleary||9 March 1996||0||0||Birmingham||v. Norway, 17 Norway 2015|
|MF||Olamide Shodipo||5 July 1997||4||1||Queens Park Rangers||v. Kosovo, 25 March 2017|
|MF||Jack Byrne||24 April 1996||13||0||Oldham (on loan from Manchester City)||v. Serbia, 6 September 2016|
|FW||Reece Grego-Cox||12 November 1996||7||5||Queens Park Rangers||v. Israel, 9 October 2017|
|FW||Ethan Boyle||4 January 1997||0||0||Finn Harps||v. Kosovo, 25 March 2017|
|FW||Josh Barrett||21 June 1998||0||0||Reading||v. Slovenia, 28 March 2016|
Note: Names in italics denote players that have been capped for the Senior team.