It's a huge honour because it's voted for by the fans.
It's a change of fortunes for Beckham: In 1998 he was very unpopular after he was sent off during a World Cup game against Argentina.
But he recently led England into next year's World Cup finals.
Accepting his award he said: "This award was voted for by fans and people in the country who watch the England and Man United teams play. That is who I thank for this award. It is amazing."
But he said the tension of waiting to find out if he'd won had given him a headache!
Meanwhile, retiring United manager Alex Ferguson won a special Lifetime Achievement award.
And Wimbledon champ Goran Ivanisevic was named Overseas Sports Personality.