The LA Galaxy footballer told ITV News that he will have a "small part" in the showcase to launch the London 2012 Olympic Games.
Beckham said that he will have "some kind of role in the opening ceremony".
He added: "Being involved in the bid team that actually got the Olympics, I feel very proud of that.
"For it to all come to life now and to see the athletes start to arrive, it's exciting. I'm privileged to still be involved in this. [Lord Sebastian Coe's] kept me involved since then. I feel very honoured."
Beckham has been rumoured to feature in the opening ceremony as part of a sporting parade of stars including Muhammad Ali.
Team GB football coach Stuart Pearce decided not to include David Beckham as one of the three players aged over-23 in the squad last month.
Watch a preview of behind-the-scenes footage from the Olympic and Paralympic opening and closing ceremonies below: