Breaking transfer news: Villa sign defender Micah Richards
The 26-year-old defender has agreed a four-year deal with the club and will join on a free transfer on July 1.
Richards will arrive at Villa Park following the expiry of his contract with Manchester City after a one-year loan deal in Italy with Fiorentina.
He helped City win the Barclays Premier League and FA Cup and has played in the Champions League.
He has also represented England on 13 occasions to date.
Manager Tim Sherwood said: "I'm really pleased to get Micah on board and I'm sure he will prove to be an excellent signing for the football club."