A Scientologist is a believer in Scientology. The following list is a list of well-known Scientologists.
- Kirstie Alley, actress
- Anne Archer, actress
- Sonny Bono, artist and congressman
- Nancy Cartwright, actress
- Erika Christensen, actress
- Chick Corea, musician
- Tom Cruise, actor
- Jenna Elfman, actress
- Werner Erhard, ex-Scientologist who founded est
- Isaac Hayes, musician, actor
- L. Ron Hubbard, founder
- Geoffrey Lewis, actor
- Juliette Lewis, actress
- Christopher Masterson, actor
- Priscilla Presley, actress
- Kelly Preston, actress and John Travolta's wife
- Mimi Rogers, actress
- Greta Van Susteren, host of On the Record with Greta Van Susteren on FOX TV
- John Travolta, actor
- Edgar Winter, musician
See also: List of people by belief