John Cromwell
- Birthday: 1886-12-23
- Deathday: 1979-09-26
- Place of birth: Toledo, Ohio, USA
- Also know as: Elwood Dager Cromwell
Elwood Dager Cromwell, known as John Cromwell, was an American film and stage director and actor. His films spanned the early days of sound to 1950s film noir, when his directing career was cut short by the Hollywood blacklist.
