Wolves just made a shock signing in the former Monaco star for £5m on a two-year deal
The 31-year-old follows fellow national teamate and Portugal goalkeeper Rui Patricio to Molineux and should partner Ruben Neves in midfield.
With 113 caps, Moutinho is Portugal’s third most-capped player behind Cristiano Ronaldo (154) and Luis Figo (127) and he was an essential member of the team that won Euro 2016.
“It was one of my objectives to play in the Premier League,” said Moutinho.
“I hope to help the club achieve their objectives. I am very excited, it is a new experience with a great club and I want to help the team, the players and club to progress.
“I know it’s very difficult with big teams in Premier League but our mentality – my mentality – is to play every game to win and I hope with my experience and my quality as a team we can achieve our goals and our objectives.
“This club is a big club and a very good project and have players I know very well.”
Moutinho started his career at Sporting Lisbon before joining Porto in 2010.
He enjoyed a successful three-season spell at Porto, winning the Primeira Liga in 2011, 2012 and 2013, as well as the 2011 Europa League and Portuguese Cup.
Ligue 1 side Monaco paid £21.5m to sign Moutinho in 2013 and he went on to score 11 goals in 211 games for the French club, helping them win the French title in 2017.