The IRFU have announced that Peter O'Mahony has signed a three-year contract which will see him remain at Munster until at least June 2018.
O'Mahony made his senior debut for Munster against Ulster in January 2010 and has since made 68 appearances for Munster scoring 10 tries.
He made his Ireland debut in the 42-10 win over Italy in February 2012. The 25-year-old has won 27 caps for his country and his latest appearance for Ireland was in the 18-11 victory over France in the 2015 Six Nations Championship.
O'Mahony is the current Munster captain and captained his country during the 2013 tour of North America.
IRFU Performance Director, David Nucifora, said "Peter's performances for Ireland over the past few seasons have been exceptional. The esteem in which he is held by Irish rugby is reflected in the fact that at the age of just 25 he has already captained his country and province.
Leadership is just one of the many qualities he brings to Munster and Ireland and we are delighted that he has committed to Irish Rugby."
Munster CEO Garrett Fitzgerald said "We are delighted that Peter has signed an IRFU contract which sees him remain with Munster up to the end of the 2018 season.
"Peter, a product of our academy system, is hugely competitive and highly ambitious. He leads by example on and off the field and is a perfect role model for all aspiring young players."
Commenting on the new contract Peter O'Mahony said "I am delighted to have signed a new three year contract with Munster and the IRFU. Munster is my home province; the team I've grown up supporting and am honoured to both represent and captain.
I look forward to working hard with my team mates, coaching staff and management to achieve continued success for both Munster and Ireland in the years ahead".