Actor John Travolta became a Scientologist in 1975 and has been one of the faith's strongest supporters.
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Tom Cruise's 2012 split with Katie Holmes triggered lots of questions about any role that Cruise's status as a Scientologist played in the divorce. The church issued this statement about the issue.
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In 2010, actress Kirstie Alley told CNN's Larry King that Scientology, her faith for three decades, helped her lose weight.
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Former Fox News host Greta Van Susteren (now with MSNBC) joined Scientology after marrying her Scientologist husband, attorney John Coale, in the 1980s.
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Nancy Cartwright, a high-profile member of the Church of Scientology, is also the voice of Bart Simpson on the animated series "The Simpsons."
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Actress Jenna Elfman is best known for her starring role in the TV sitcom "Dharma and Greg."
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Actress Juliette Lewis defended Scientology and fellow proponent Tom Cruise after his 2012 divorce.
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Beck came into the spotlight in the '90s with his breakthrough single, "Loser."
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Actress Anne Archer was nominated for an Academy Award for her role in the 1987 movie "Fatal Attraction."
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Catherine Bell starred in the TV series "JAG" and "Army Wives."
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Actor Danny Masterson is known for his role in "That '70s Show."
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Actress and model Bijou Phillips wed Masterson in 2011.
When asked about his Scientology faith, actor Giovanni Ribisi said, "It's a personal thing, it's something that works for me, and I think it's that simple."
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Actress Lynsey Bartilson co-starred in the sitcom "Grounded for Life."
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Actress Erika Christensen played Julia on the critically acclaimed television series "Parenthood."
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Veteran rapper Doug E. Fresh has performed at Church of Scientology events.