Tom Cruise is the celebrity face of Scientology. He makes no secret of his allegiance to the religion.
Kirstie Alley is a staunch supporter. On The Howard Stern Show, she attacked Leah Remini for bad-mouthing the religion.
Juliette Lewis stars on ABC's Secrets and Lies. But she's definitely a Scientologist. That is not a secret.
Isaac Hayes passed away in 2008. Prior to that death, however, the singer was a known practioner.
Catherine Bell is probably best known for her role on Army Wives. She also starred on JAG.
John Travolta is probably the second best-known Scientologist. He also might be gay.
Beck has been involved in Scientology for most of his life; his wife, Marissa, is also a second-generation Scientologist.
You may not know Nancy Cartwright by her face. But you know this Simpsons star by her voice, that's for certain.
Doug E. Fresh
Doug E. Fresh is a rapper. He's one of the few rapping Scientologists.
Kelly Preston is the wife of John Travolta. But she's an actresa and deserves her own spot here for certain.
Elisabeth Moss is definitely a member of the Church. But she doesn't talk about it often in public.
We adored Erika Christensen on Parenthood. But many don't agree with her views on religion.
Jason Lee will always be best remembered for his roles in My Name is Early and in a number of Kevin Smith movies.
Giovanni Ribisi is child of Scientologists. He was raised in the Church.
Laura Prepon was rumored to be a wife candidate for Tom Cruise. Now that's some Scientology dedication!
Jenna Elfman makes people laugh on TV. But her views on religion have not always been as well received.
Will Smith is allegedly not a Scientologist. He has always denied the classification. But he's close friends with Cruise and the rumors persist.