Robbie Henshaw has signed a two-year contract extension to remain with Ireland and Leinster until the 2027/28 season.
Confirming the deal, Henshaw commented: "It is a great boost to secure my long-term future with the IRFU and I am delighted to get this deal concluded ahead of a busy period. It is a huge privilege to play rugby in Ireland because we are so well looked after, from coaching, facilities, sports science and player management perspectives.
"It's also an incredibly competitive place to play rugby, and, even though we have enjoyed some success in recent years, there is great hunger within Irish Rugby to continue driving forward. I believe that my best days are to come and I am excited to continue my journey here in Ireland."
Henshaw started three of Ireland's recent Autumn Nations Series matches at Aviva Stadium. The 31-year-old centre has won 77 test caps and five Six Nations titles with Ireland.
IRFU Performance Director, David Humphreys, added: "Since breaking into the senior international squad 11 years ago, Robbie has been a consistent presence in one of the most competition areas of the Irish backline.
"Robbie is a consummate professional and a popular figure who continues to set the bar high. His performances during the recent Autumn Nations Series suggest that there is even more to come and I am delighted that he will continue his playing career here in Ireland and with Leinster."