Johnny Sexton vacated the role following his retirement from the sport last month.
Leinster have confirmed the appointment of Garry Ringrose and James Ryan as joint captains.
The pair replace Johnny Sexton, who retired following the World Cup.
Both Ringrose and Ryan returned to Leinster training earlier this week following their exploits with Ireland in France.
Leinster are next in action against the Dragons in the URC this Sunday.
Kick off at Rodney Parade is set for 1.15pm.
Green Light For Westmeath All Weather Pitches
Clara And Tubberclair Aiming To Reach Leinster Intermediate Deciders
Portlaoise Panthers Looking To Restore Winning Streak
Cillian Bourke Set For Big Move To AFL
Camross Set For All Ireland Semi-Final Clash
Midlands Derby To Open Leinster Football Championship
Robbie Greville Announces Retirement From Inter-County Hurling
Portlaoise Panthers Entertain SETU Waterford Wildcats In Women's Super League
Leinster Final Appearance The Goal For Tullamore
Portarlington Preparing For Athy Challenge
Buccaneers Travel To Malone In AIL
I'm Gonna Do My Best To Win The Last Two Races - Alex Dunne
Midlands Counties To Learn Their Opponents For Leinster Football Championship
Midlands Athletes To Compete At European Cross Country Championships
CCFL: Big Wins For Monksland United And St Peter's
Alex Dunne Returns To F2 Action
Clane Were The Better Side - Clonad Manager
Gurranabraher Prove Too Strong For Portlaoise Panthers
Clough Ballacolla Made The Game A Sticky One - Henry Shefflin
Athlone Town Players Shortlisted At Irish Soccer Awards