Hobson had two years remaining on his Bristol contract
Jason Hobson has joined Wasps on a two-year deal after six seasons at Bristol.
"Wasps is a great club and for me this is a fantastic opportunity to train and play with some of the best in the business," said the 26-year-old prop.
"There is no denying their success over the years and you can sense that all eyes are on a strong season."
Hobson joined Bristol in 2003 from Exeter and made 62 appearances, but his involvement last season was limited by a neck injury sustained in December.
However, he is now back to full fitness after undergoing surgery on a disc problem in January and is relishing the prospect of teaming up with the club's new forwards coach Trevor Woodman.
"With Tony Hanks, Shaun Edwards and Trevor Woodman now on board, I'm really looking forward to just getting stuck in and hopefully helping be a part of what will be a great year for the club," added Hobson.
The tight-head, who has one cap to his name after playing for England on their summer tour to New Zealand in 2008, follows team-mates David Lemi and Dan Ward-Smith in leaving relegated Bristol for Wasps.
And new Wasps director of rugby Hanks feels Hobson has the potential to force his way back into Martin Johnson's international plans.
Hanks said: "Jason is a highly promising prop who, despite injury struggles, has still been in the mix on the international scene having been capped by England."