J. O. Martin
- Title: J. O. Martin
- Popularity: 1.05
- Known For: Acting
- Birthday: 1888-12-27
- Place of Birth: Humpolec, Austria-Hungary [now Humpolec, Czech Republic]
- Homepage:
- Also Known As: Jan Otakar Martin, J.O. Martin, Ян Отакар Мартин, Я. О. Мартин, Я.О. Мартин