| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 10-Jul-2021 | Ryan Baird | Ireland | 26-Jul-1999 | 21(350) |
| 10-Jul-2021 | Craig Casey | Ireland | 19-Apr-1999 | 22(83) |
| 10-Jul-2021 | Tom O'Toole | Ireland | 23-Sep-1998 | 22(291) |
| 10-Jul-2021 | James Hume | Ireland | 07-Sep-1998 | 22(307) |
| 03-Jul-2021 | Caelan Doris | Ireland | 02-Apr-1998 | 23(92) |
| 03-Jul-2021 | Ronan Kelleher | Ireland | 24-Jan-1998 | 23(160) |
| 10-Jul-2021 | Gavin Coombes | Ireland | 11-Dec-1997 | 23(211) |
| 10-Jul-2021 | Robert Baloucoune | Ireland | 19-Aug-1997 | 23(325) |
| 03-Jul-2021 | Jordan Larmour | Ireland | 10-Jun-1997 | 24(23) |
| 03-Jul-2021 | James Ryan | Ireland | 24-Jul-1996 | 24(344) |
| 03-Jul-2021 | Hugo Keenan | Ireland | 18-Jun-1996 | 25(15) |
| 03-Jul-2021 | Jacob Stockdale | Ireland | 03-Apr-1996 | 25(91) |
| 03-Jul-2021 | Joey Carbery | Ireland | 01-Nov-1995 | 25(245) |
| 10-Jul-2021 | Nick Timoney | Ireland | 08-Jan-1995 | 26(184) |
| 03-Jul-2021 | Ultan Dilane | Ireland | 09-Nov-1993 | 27(236) |
| 03-Jul-2021 | Josh van der Flier | Ireland | 25-Apr-1993 | 28(69) |
| 03-Jul-2021 | Chris Farrell | Ireland | 16-Mar-1993 | 28(109) |
| 03-Jul-2021 | Stuart McCloskey | Ireland | 06-Aug-1992 | 28(331) |
| 03-Jul-2021 | Jamieson Gibson-Park | Ireland | 10-May-1992 | 29(54) |
| 03-Jul-2021 | Finley Bealham | Ireland | 09-Oct-1991 | 29(268) |
| 10-Jul-2021 | Andrew Conway | Ireland | 11-Jul-1991 | 29(365) |
| 03-Jul-2021 | Peter O'Mahony | Ireland | 17-Sep-1989 | 31(289) |
| 03-Jul-2021 | Dave Kilcoyne | Ireland | 14-Dec-1988 | 32(201) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).