| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 23-Feb-2018 | Ciaran Frawley | Ireland | 04-Dec-1997 | 20(81) |
| 02-Sep-2017 | Jordan Larmour | Ireland | 10-Jun-1997 | 20(84) |
| 02-Sep-2017 | Max Deegan | Ireland | 01-Oct-1996 | 20(336) |
| 16-Sep-2017 | James Ryan | Ireland | 24-Jul-1996 | 21(54) |
| 16-Sep-2017 | Andrew Porter | Ireland | 16-Jan-1996 | 21(244) |
| 03-Nov-2017 | Conor O'Brien | Ireland | 06-Feb-1996 | 21(271) |
| 09-Feb-2018 | Will Connors | Ireland | 04-Apr-1996 | 21(311) |
| 16-Sep-2017 | Joey Carbery | Ireland | 01-Nov-1995 | 21(320) |
| 02-Sep-2017 | Ross Byrne | Ireland | 08-Apr-1995 | 22(148) |
| 24-Nov-2017 | Josh Murphy | Ireland | 07-Feb-1995 | 22(291) |
| 02-Dec-2017 | Gary Ringrose | Ireland | 26-Jan-1995 | 22(311) |
| 23-Feb-2018 | Nick McCarthy | Ireland | 25-Mar-1995 | 22(336) |
| 02-Sep-2017 | Dan Leavy | Ireland | 23-May-1994 | 23(102) |
| 16-Sep-2017 | Ross Moloney | Ireland | 11-May-1994 | 23(128) |
| 02-Sep-2017 | Adam Byrne | Ireland | 10-Apr-1994 | 23(145) |
| 01-Jan-2018 | Peter Dooley | Ireland | 04-Aug-1994 | 23(150) |
| 02-Sep-2017 | Rory O'Loughlin | Ireland | 21-Jan-1994 | 23(224) |
| 16-Sep-2017 | Edward Byrne | Ireland | 09-Sep-1993 | 24(7) |
| 28-Apr-2018 | Peadar Timmins | Ireland | 08-Jan-1994 | 24(110) |
| 07-Oct-2017 | Robbie Henshaw | Ireland | 12-Jun-1993 | 24(117) |
| 02-Sep-2017 | Josh van der Flier | Ireland | 25-Apr-1993 | 24(130) |
| 23-Feb-2018 | Bryan Byrne | Ireland | 09-Sep-1993 | 24(167) |
| 08-Sep-2017 | Luke McGrath | Ireland | 03-Feb-1993 | 24(217) |
| 28-Apr-2018 | Tom Daly | Ireland | 31-Jul-1993 | 24(271) |
| 29-Sep-2017 | Tadhg Furlong | Ireland | 14-Nov-1992 | 24(319) |
| 22-Sep-2017 | Barry Daly | Ireland | 19-Sep-1992 | 25(3) |
| 08-Sep-2017 | Jack Conan | Ireland | 29-Jul-1992 | 25(41) |
| 02-Sep-2017 | Jamieson Gibson-Park | Ireland | 10-May-1992 | 25(115) |
| 02-Dec-2017 | James Lowe | Wales | 08-Jul-1992 | 25(147) |
| 16-Sep-2017 | Jordi Murphy | Ireland | 22-Apr-1991 | 26(148) |
| 08-Sep-2017 | James Tracy | Ireland | 02-Apr-1991 | 26(160) |
| 22-Sep-2017 | Michael Kearney | Ireland | 29-Mar-1991 | 26(178) |
| 08-Sep-2017 | Rhys Ruddock | Ireland | 13-Oct-1990 | 26(331) |
| 16-Sep-2017 | Noel Reid | Ireland | 22-May-1990 | 27(117) |
| 29-Sep-2017 | Jack McGrath | Ireland | 11-Oct-1989 | 27(353) |
| 16-Sep-2017 | David Kearney | Ireland | 19-Jun-1989 | 28(89) |
| 02-Dec-2017 | Ian Nagle | Ireland | 17-Oct-1988 | 29(46) |
| 02-Sep-2017 | Cian Healy | Ireland | 07-Oct-1987 | 29(331) |
| 29-Sep-2017 | Sean O'Brien | Ireland | 14-Feb-1987 | 30(228) |
| 02-Sep-2017 | Devin Toner | Ireland | 29-Jun-1986 | 31(65) |
| 29-Sep-2017 | Fergus McFaddon | Ireland | 17-Jun-1986 | 31(104) |
| 02-Sep-2017 | Sean Cronin | Ireland | 06-May-1986 | 31(120) |
| 02-Sep-2017 | Michael Bent | Ireland | 25-Apr-1986 | 31(131) |
| 09-Feb-2018 | Richard Strauss | Ireland | 29-Jan-1986 | 32(11) |
| 29-Sep-2017 | Jonathan Sexton | Ireland | 11-Jul-1985 | 32(80) |
| 02-Sep-2017 | Scott Fardy | Australia | 05-Jul-1984 | 33(59) |
| 02-Sep-2017 | Robert Kearney | Ireland | 26-Mar-1983 | 34(161) |
| 02-Sep-2017 | Isikeli Nacewa | Fiji | 22-Jul-1982 | 35(43) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).