Scientology's Most Famous Members and Detractors

Perhaps Scientology's most visible supporter, Cruise was introduced to the church in 1990 through his first wife Mimi Rogers.

Travolta was raised Roman Catholic, but converted to Scientology in 1975 after being given the book Dianetics on the set of The Devil's Rain.

The Orange Is the New Black star confirmed that she is a Scientologist in a 2007 interview with Women's Health, and even appeared in the church's 'Christmas Stories' benefit in 2013.

Alley was raised a Methodist, but has been a member of the Church of Scientology since 1979.

The Mad Men star posed with fellow actors and Scientologists Jason Dohring and Erika Christensen at the Church of Scientology anniversary gala in 2008.

The musician is married to a second-generation Scientologist, actress Marissa Ribisi, and has been involved with the religion for most of his life. He confirmed his membership in the church to the Irish Sunday Tribune in 2011, saying, "Yeah, I'm a Scientologist. My father has been a Scientologist for about 35 years, so I grew up in and around it and stuff."

The actress started studying Scientology when she began dating Tom Cruise in 2005 and the couple was married in a Scientologist ceremony in Italy in November 2006. After their 2012 divorce, Holmes returned to the Catholic church.

The King of Queens star left the church in July 2013 after more than 30 years of membership.

After 35 years of active membership, the Crash director left Scientology in 2009, motivated by statements made by the San Diego branch of the church in support of Proposition 8, the ballot initiative which banned gay marriage in California.

Though mother Priscilla Presley remains a devout Scientologist, Lisa Marie opened up about leaving the church in 2012, saying, "They were taking my soul, my money, my everything."

The Transparent star addressed rumors that he was involved with the church in 2008, saying, "I took some Scientology classes at one time, studied Scientology for a while, but no more. I have nothing against it, but I am no longer a Scientologist."