Bell is in excellent form this season and has been making up for lost time having had his first year at the Club cruelly halted with a ruptured Achilles injury.
Having made 15 appearances already this season, Bell is delighted to sign up for more.
"I love playing for Wasps and the decision to extend my contract was an easy one to make. I believe under Dai Young we will continue to improve and I am very excited about the future of the Club and hope to be a big part of it.”
Director of Rugby Dai Young added: “Chris has been excellent since he came here and worked very hard to get back from a tough injury. That work is being rewarded now and he’s put in some fine performances this season. We are delighted he’s committed his future here.”