Tottenham full-back picks up the gong after a fine first full season at White Hart Lane that saw him crash in a north London derby winner and make his England debut
The 21-year-old made his international debut in England’s friendly against Spain and then made his full debut against Sweden picking up the man of the match award for his efforts.
He also became a fans favourite at White Hart Lane after scoring the winning goal in a north London derby win over Arsenal with a 25-yard strike.
Spurs teammate Gareth Bale and Manchester City striker Sergio Aguero were among the favourites to win the award.
Also nominated were Arsenal's teenage midfielder Alex Oxlade-Chamberlain, Manchester United striker Danny Welbeck and Chelsea forwar Daniel Sturridge.
Walker had originally been a 33/1 outsider to pick up the award but after a spate of betting, quickly became the favourite.
Bookmakers, William Hill then refused to take any more bets on the award, after an attempted £1,200 bet on the defender, leading to fears that the result had been leaked.