Camier took a first podium of 2012 at the Nurburgring recently as he continues to help the team's transition from British Superbikes to the world series.
The 2009 BSB champion joined them at the start of the season after two years at Aprilia Alitalia.
2013 will be his fourth year in WSBK.
"I am so happy to continue working with FIXI Crescent Suzuki and the whole team," said Camier.
"We had a tough start to 2012, but the guys have all worked so hard to turn things around and we are now more competitive and close to the podium.
"I really wanted to stay here and continue with what we have started and to win races on the Suzuki, which is still the target and will be our main focus for 2013.
"The whole team is totally focused on succeeding in WSBK and with everything that is happening at the moment we are heading in that direction - it feels good to be a part of it."
Team principal Paul Denning said: "To secure the deal with Leon is a very important step in achieving the team's 2013 targets.
"He was at the forefront of our thoughts when we originally planned to bring Crescent Suzuki to World Superbikes and his input, positive attitude and hard work through the first season has helped push us to a more competitive level.
"He is now regularly challenging the front guys and we are sure the plans we have in place for 2013 will see him regularly fighting for the podium. He has been a great asset to the whole team and his professionalism is obvious to all.
"We are all looking forward to working with him again and making sure he is in a position to be pushing for victories in 2013."
They are yet to announce who their second rider will be.