| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 19-Dec-2020 | Ryan Baird | Ireland | 26-Jul-1999 | 21(147) |
| 12-Dec-2020 | Caelan Doris | Ireland | 02-Apr-1998 | 22(255) |
| 19-Dec-2020 | Ronan Kelleher | Ireland | 24-Jan-1998 | 22(330) |
| 12-Dec-2020 | Ciaran Frawley | Ireland | 04-Dec-1997 | 23(8) |
| 10-Apr-2021 | Jordan Larmour | Ireland | 10-Jun-1997 | 23(304) |
| 12-Dec-2020 | Jimmy O'Brien | Ireland | 27-Nov-1996 | 24(15) |
| 19-Dec-2020 | James Ryan | Ireland | 24-Jul-1996 | 24(148) |
| 12-Dec-2020 | Hugo Keenan | Ireland | 18-Jun-1996 | 24(177) |
| 19-Dec-2020 | Andrew Porter | Ireland | 16-Jan-1996 | 24(338) |
| 12-Dec-2020 | Ross Byrne | Ireland | 08-Apr-1995 | 25(249) |
| 19-Dec-2020 | Josh Murphy | Ireland | 07-Feb-1995 | 25(316) |
| 19-Dec-2020 | Gary Ringrose | Ireland | 26-Jan-1995 | 25(328) |
| 12-Dec-2020 | Peter Dooley | Ireland | 04-Aug-1994 | 26(131) |
| 10-Apr-2021 | Rory O'Loughlin | Ireland | 21-Jan-1994 | 27(79) |
| 12-Dec-2020 | Robbie Henshaw | Ireland | 12-Jun-1993 | 27(183) |
| 12-Dec-2020 | Josh van der Flier | Ireland | 25-Apr-1993 | 27(231) |
| 12-Dec-2020 | Luke McGrath | Ireland | 03-Feb-1993 | 27(312) |
| 10-Apr-2021 | Tadhg Furlong | Ireland | 14-Nov-1992 | 28(147) |
| 19-Dec-2020 | Jamieson Gibson-Park | Ireland | 10-May-1992 | 28(223) |
| 10-Apr-2021 | Jack Conan | Ireland | 29-Jul-1992 | 28(255) |
| 10-Apr-2021 | James Lowe | Wales | 08-Jul-1992 | 28(276) |
| 12-Dec-2020 | James Tracy | Ireland | 02-Apr-1991 | 29(255) |
| 12-Dec-2020 | Rhys Ruddock | Ireland | 13-Oct-1990 | 30(61) |
| 12-Dec-2020 | David Kearney | Ireland | 19-Jun-1989 | 31(176) |
| 19-Dec-2020 | Cian Healy | Ireland | 07-Oct-1987 | 33(74) |
| 12-Dec-2020 | Devin Toner | Ireland | 29-Jun-1986 | 34(167) |
| 12-Dec-2020 | Michael Bent | Ireland | 25-Apr-1986 | 34(232) |
| 10-Apr-2021 | Jonathan Sexton | Ireland | 11-Jul-1985 | 35(274) |
| 12-Dec-2020 | Scott Fardy | Australia | 05-Jul-1984 | 36(160) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).