Published Tuesday, 17 December 2013
Rory Best's contract will run until 2016. (© Presseye)
The 31-year-old, who captained the British and Irish Lions against ACT Brumbies during this summer's tour of Australia, will carry on until June 2016.
"I am pleased to have signed for a further two years," said Banbridge man Best, who received a late call-up for the tour after England's Dylan Hartley was ruled out.
"It is a massive honour to play for Ireland and Ulster. The support that I received when I missed out on the initial Lions squad was a massive factor in me making the decision to stay.
"That made me feel very special and underlined to me that Ulster is more than a team, it is a community and a rugby family."
Best debuted for Ulster in 2004 and has gone on to play 143 times, scoring 12 tries.
He has made 70 appearances for Ireland since 2005 and scored eight international tries, the most recent of which came in the narrow defeat to the All Blacks.
Philip Browne of the IRFU said: "Rory has been a great servant to Irish rugby over the past 10 years for both Ireland and Ulster.
"We are delighted to secure his future in Ireland for the next two years."
Ulster's David Humphreys added: "He will be a key player in our team as we continue to build in the coming years and I am delighted that he has signed this new contract."
© UTV News