Dan Biggar has agreed a new three-year contract with the Ospreys that will keep the Wales fly-half at the Liberty Stadium until 2016.
The 23-year-old is the region's record points-scorer, averaging almost 10 points a game in his 121 first-team appearances since his debut in 2008.
Biggar said: "This is an organisation that has always been very good to me and supported me, so it's great that I can recognise that by committing my future to the region.
"Now I've signed, it means I can concentrate on the next few weeks and help the team to secure a (RaboDirect PRO12) play-off place without any distractions.
"I think that both parties are very happy with where we are and can really look forward to the future positively.
"The Ospreys wanted to keep me and I wanted to stay, so it's always been a case of agreeing on a few things. It's not just financial, there are other things that come into the equation.
"This is a great environment with fantastic facilities and great coaches. It brings the best of you as a player, and I consider myself fortunate to have come through this system to represent my home region.
"My aim is to be competing for trophies with the Ospreys every year.
"I have discussed this at length with the coaches and management here, I've made that ambition absolutely clear and I wouldn't have committed for the next three years if they didn't share those aims.
"We know how difficult it is, with the salary cap and things like that, but that doesn't mean we can't continue to be successful."