| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 23-Feb-2018 | Isikeli Nacewa | Fiji | 22-Jul-1982 | 35(217) |
| 01-Jan-2018 | Robert Kearney | Ireland | 26-Mar-1983 | 34(282) |
| 24-Mar-2018 | Scott Fardy | Australia | 05-Jul-1984 | 33(262) |
| 01-Jan-2018 | Jonathan Sexton | Ireland | 11-Jul-1985 | 32(174) |
| 14-Apr-2018 | Richard Strauss | Ireland | 29-Jan-1986 | 32(75) |
| 24-Mar-2018 | Sean Cronin | Ireland | 06-May-1986 | 31(323) |
| 09-Mar-2018 | Michael Bent | Ireland | 25-Apr-1986 | 31(318) |
| 14-Apr-2018 | Fergus McFaddon | Ireland | 17-Jun-1986 | 31(302) |
| 07-Apr-2018 | Devin Toner | Ireland | 29-Jun-1986 | 31(283) |
| 14-Apr-2018 | Sean O'Brien | Ireland | 14-Feb-1987 | 31(59) |
| 07-Apr-2018 | Cian Healy | Ireland | 07-Oct-1987 | 30(183) |
| 14-Apr-2018 | Ian Nagle | Ireland | 17-Oct-1988 | 29(179) |
| 09-Mar-2018 | David Kearney | Ireland | 19-Jun-1989 | 28(263) |
| 28-Apr-2018 | Jack McGrath | Ireland | 11-Oct-1989 | 28(199) |
| 28-Apr-2018 | Noel Reid | Ireland | 22-May-1990 | 27(341) |
| 28-Apr-2018 | Michael Kearney | Ireland | 29-Mar-1991 | 27(30) |
| 28-Apr-2018 | James Tracy | Ireland | 02-Apr-1991 | 27(26) |
| 07-Oct-2017 | Rhys Ruddock | Ireland | 13-Oct-1990 | 26(360) |
| 14-Apr-2018 | Jordi Murphy | Ireland | 22-Apr-1991 | 26(358) |
| 14-Apr-2018 | Jamieson Gibson-Park | Ireland | 10-May-1992 | 25(339) |
| 28-Apr-2018 | James Lowe | Wales | 08-Jul-1992 | 25(294) |
| 28-Apr-2018 | Jack Conan | Ireland | 29-Jul-1992 | 25(273) |
| 28-Apr-2018 | Barry Daly | Ireland | 19-Sep-1992 | 25(221) |
| 07-Apr-2018 | Tadhg Furlong | Ireland | 14-Nov-1992 | 25(144) |
| 24-Mar-2018 | Luke McGrath | Ireland | 03-Feb-1993 | 25(49) |
| 28-Apr-2018 | Tom Daly | Ireland | 31-Jul-1993 | 24(271) |
| 01-Jan-2018 | Josh van der Flier | Ireland | 25-Apr-1993 | 24(251) |
| 06-Jan-2018 | Robbie Henshaw | Ireland | 12-Jun-1993 | 24(208) |
| 09-Mar-2018 | Bryan Byrne | Ireland | 09-Sep-1993 | 24(181) |
| 09-Mar-2018 | Edward Byrne | Ireland | 09-Sep-1993 | 24(181) |
| 28-Apr-2018 | Peadar Timmins | Ireland | 08-Jan-1994 | 24(110) |
| 14-Apr-2018 | Rory O'Loughlin | Ireland | 21-Jan-1994 | 24(83) |
| 07-Apr-2018 | Adam Byrne | Ireland | 10-Apr-1994 | 23(362) |
| 28-Apr-2018 | Ross Moloney | Ireland | 11-May-1994 | 23(352) |
| 07-Apr-2018 | Dan Leavy | Ireland | 23-May-1994 | 23(319) |
| 09-Feb-2018 | Peter Dooley | Ireland | 04-Aug-1994 | 23(189) |
| 07-Apr-2018 | Josh Murphy | Ireland | 07-Feb-1995 | 23(59) |
| 28-Apr-2018 | Nick McCarthy | Ireland | 25-Mar-1995 | 23(34) |
| 23-Feb-2018 | Gary Ringrose | Ireland | 26-Jan-1995 | 23(28) |
| 28-Apr-2018 | Ross Byrne | Ireland | 08-Apr-1995 | 23(20) |
| 28-Apr-2018 | Joey Carbery | Ireland | 01-Nov-1995 | 22(179) |
| 28-Apr-2018 | Andrew Porter | Ireland | 16-Jan-1996 | 22(103) |
| 07-Apr-2018 | Conor O'Brien | Ireland | 06-Feb-1996 | 22(61) |
| 23-Feb-2018 | Will Connors | Ireland | 04-Apr-1996 | 21(325) |
| 28-Apr-2018 | Max Deegan | Ireland | 01-Oct-1996 | 21(209) |
| 26-Dec-2017 | James Ryan | Ireland | 24-Jul-1996 | 21(155) |
| 14-Apr-2018 | Jordan Larmour | Ireland | 10-Jun-1997 | 20(308) |
| 23-Feb-2018 | Ciaran Frawley | Ireland | 04-Dec-1997 | 20(81) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).