Ireland lock in Toner for three years
The contract will see him remain at Leinster until at least June 2020.
Toner made his senior debut for Leinster against the Border Reivers in January 2006 and has since made 187 appearances for Leinster scoring 3 tries.
He made his Ireland debut in the 20-10 win over Samoa in November 2010 and has won 42 caps for his country, including the recent trio of victories over Southern Hemisphere opposition – South Africa (Cape Town), New Zealand (Chicago) and Australia (Dublin).
He last lined out for Ireland against Australia in the final game of the 2016 year-end Tests.
Toner was part of the Six Nations Championship sides of 2014 and 2015 and has collected three European Cups, a Challenge Cup and three Pro12 league titles with Leinster.
"Devin is a top class international second row and has grown into a leader for both Ireland and Leinster," IRFU Performance Director, David Nucifora, said.
"His performances for Ireland over the past number of seasons have been outstanding and he continues to show growth and an appetite to develop his game."
Leinster CEO Mick Dawson said: "Devin has established himself as a key player within Leinster and Ireland and securing his services is great news for both. Player retention is a huge focus and for a player of Devin's calibre to commit to Leinster is a huge statement for us as a club and an endorsement of the work that Leo and the rest of the coaching staff are doing. We look forward to working with Devin over the coming years."
Commenting on the new contract Devin Toner said: "I am delighted to have re-signed with the IRFU and Leinster. There is a huge amount of talent coming through at Leinster and it is a really exciting time to be involved with the province. There is a real opportunity to be successful at both provincial and national level over the coming years and I look forward to playing a part in helping to achieve that success."
