N-P
- Kate Nelligan, actress
- Christine Nesbitt, silver-medal winning Olympic speed-skater (women's team pursuit)
- Nihilist Spasm Band, pioneering noise music band
- Bert and Joe Niosi (brothers), band members of radio's Happy Gang.
- Bryan Lee O'Malley, comic book artist and writer, Scott Pilgrim
- Ocean, Christian folk rock band
- Megan Park, actress
- Paterson Ewen, important Canadian painter
- Casey Patton, Canadian Boxer
- Paul Peel, painter
- Corey Perry, NHL forward for the Anaheim Ducks
- David Peterson, premier of Ontario, 1985–1990
- Chris Potter, actor
- Skip Prokop, rock drummer/ songwriter, founder of the band, Lighthouse
- Brandon Prust, NHL forward with the Montreal Canadiens
- Alycia Purrott, actress
Read more about this topic: List Of People From London, Ontario