He was appointed Head Coach in 2015
Leinster Head Coach Leo Cullen has signed a two-year contract extension which will see him lead the province until the end of the 2018/19 season.
Cullen took charge of the team in 2015 and has led them through a period of transition.
During his playing days, he captained the squad to three European Cup wins and played 221 caps in total.
"I think Leo deserves enormous credit for the way he has stepped up to the mark over the last two seasons," said Leinster Rugby CEO Mick Dawson.
"There have of course been challenges and disappointments but already in his short career as Head Coach he has led Leinster to a Guinness PRO12 Final and to successive top two regular season finishes.
BREAKING: Leinster Rugby and the IRFU have this morning confirmed a contract extension for head coach Leo Cullen. https://t.co/Jw4bTOWks1— Leinster Rugby (@leinsterrugby) May 30, 2017
"He has led the club to the last four of the Champions Cup this season, having already finished top of the pool and they went very close to reaching a first Champions Cup Final since 2012.
"We are delighted to have secured his services for another two seasons," he added.
He also confirmed the retention of Stuart Lancaster, Girvan Dempsey and John Fogarty as key components in Cullen's coaching team with all three retaining the same titles as before.
Head Analyst Emmet Farrell will also be taking on the role of Kicking Coach for next season.