Lionel Chetwynd
- Birthday: 1940-01-29
- Place of birth: London, England, UK
- Also know as: Peter Dion
Lionel Chetwynd is an Academy Award-nominated screenwriter, director, and producer known for his extensive work in historical dramas and docudramas. Born in London and raised in Canada, he eventually became a naturalized U.S. citizen and a prominent conservative voice in Hollywood.
