The Spain star has signed a four-year deal after the Catalan side approved a £34.2m fee with former club Valencia.
David Villa, the Spain forward, has fulfilled his move from Valencia to Barcelona after passing his medical this morning.
The 28-year-old signed a four-year contract, with an option for a further twelve months and a buy-out clause of 200 million euros.
"Anybody would be happy to come to a club like this - as everybody says, this is the best team in the world," Villa told Barcelona's website.
"I'm very happy and proud to be here."
"At Valencia I have grown as a player and as a person. At Valencia I have felt at home from day one and nobody will doubt it to be that way forever.
"I want everyone to know that it has been a great source of pride for me to wear this shirt. It has given me so much and I will always carry it in my heart."
