The Portugal intentional has signed a two-year contract with the newly promoted club.
Moutinho, 31, is his country's third most capped player and brings with him a mountain of experience to the East Midlands club.
Moutinho's agent, Jorge Mendes, has close to ties with Wolves' Chinese owners.
My first day at Wolves. @WolvesPRTpic.twitter.com/e168U9xWBY
— João Moutinho (@JoaoMoutinho) July 24, 2018