The 31-year-old England striker has signed a two-year deal to return to his boyhood club, for whom he made his debut as a 16-year-old and burst onto the Premier League scene.
Rooney said: "It is some time since I said that the only Premier League club I would play for other than Manchester United was Everton, so I am delighted that the move has happened.Thirteen years ago I went to United with the intention of winning trophies and I have been fortunate to be a part of one of the most successful periods in the club's history. I have come back to Everton because I believe Ronald Koeman is building a team that can win something and I look forward to playing my part in making that a reality for the club I have supported since a boy."
Everton manager Ronald Koeman said: "Wayne has shown me that ambition that we need and that winning mentality - he knows how to win titles and I'm really happy he's decided to come home.He loves Everton and he was desperate to come back. He is still only 31 and I don't have any doubts about his qualities. It's fantastic he's here."