The 24-year-old was favourite to take the honour after impressing with 26 goals in 30 Premier League appearances this season.
“It’s a great feeling to win the Player of the Year award because it’s voted for by the players,” said Rooney.
“It’s something I’m really proud of and it’s a great honour.
“I remember coming here in 2005 and 2006 to win the Young Player of the Year.
“I saw the players winning the main one and it’s something I’ve aimed for since.”
Rooney also took time to pay tribute to the influence that United manager Sir Alex Ferguson has had on his career.
“Sir Alex is a great manager who has really brought me on as a player since I joined United,” he said.
“His hunger passes through to the players. It’s great to see that he’s pushing 70 and hasn’t changed a bit.
“I’m sure he’ll be here for a long time yet.”
