From the section Rugby Union

Name Position Age Caps Club Rory Best Hooker 33 83 Ulster Sean Cronin Hooker 29 45 Leinster Richardt Strauss Hooker 29 10 Leinster Tadhg Furlong Prop 22 2 Leinster Cian Healy Prop 27 51 Leinster Jack McGrath Prop 25 20 Leinster Mike Ross Prop 35 52 Leinster Nathan White Prop 34 3 Connacht Iain Henderson Lock 23 19 Ulster Mike McCarthy*** Lock 33 17 Leinster Paul O'Connell (c)*** Lock 35 107 Toulon Donnacha Ryan Lock 31 31 Munster Devin Toner Lock 29 27 Leinster Jamie Heaslip Back-row 31 79 Leinster Chris Henry Back-row 30 19 Ulster Jordi Murphy Back-row 24 12 Leinster Sean O'Brien Back-row 28 39 Leinster Peter O'Mahony** Back-row 26 32 Munster Rhys Ruddock** Back-row 24 5 Leinster Conor Murray Scrum-half 26 39 Munster Eoin Reddan Scrum-half 34 63 Leinster Paddy Jackson Fly-half 23 12 Ulster Ian Madigan Fly-half 26 21 Leinster Jonathan Sexton Fly-half 30 56 Leinster Darren Cave Centre 28 10 Ulster Luke Fitzgerald Centre 28 31 Leinster Robbie Henshaw Centre 22 12 Connacht Jared Payne* Centre 29 8 Ulster Tommy Bowe Wing 31 66 Ulster Keith Earls Wing 27 41 Munster Dave Kearney Wing 26 10 Leinster Simon Zebo Wing 25 18 Munster Rob Kearney Full-back 29 66 Leinster

Age and caps as of start of tournament on 18 September 2015.

* Jared Payne was ruled out of the remainder of the World Cup on 10 October.

** Rhys Ruddock replaced Peter O'Mahony on 12 October.

*** Mike McCarthy replaced Paul O'Connell on 13 October.