The Beatles musician explained that he is a big fan of athletics, and that he can't wait to watch Bolt in action at the London Olympics.
When asked by Lauren Laverne on BBC Radio 6 Music which sport he is most looking forward to, he said: "I'm actually a big fan of athletics.
"People say to me 'What's your favourite sport?' and it's really one of mine. When that's on telly, I don't go out."
He added: "I love the sprint - obviously the 100 metres. I've got to see Mr Bolt because, you know, he's just a bit phenomenal. Wow, yeah! I don't think anyone can beat him, so that will be great to see."
McCartney is expected to perform at tomorrow night's Olympics opening ceremony.
He recently slammed the "idiot" decision to leave David Beckham out of the Team GB football squad.
Watch a number of celebrities discuss the London 2012 Olympics with Digital Spy below: