1 / 10
Also known for portraying "Rebecca" in 'Cheers', Kirstie Alley became a member of the Church of Scientology in 1979, after being raised as a Methodist. The actress said that Scientology helped her with substance abuse problems
2 / 10
The Pulp Fiction star was raised Roman Catholic but decided to convert to Scientology in the mid 1970's. Although he once was afraid of the Church revealing details about his private life, he said Scientology actually helped him in moving forward with his acting career after his son Jett died in 2009 at the age of 16
3 / 10
The Mad Men star was raised as Scientologist and has defended her beliefs several times, mostly on social media. After a fan questioned her involvement with the Church of Scientology, she said: "Religious freedom and tolerance and understanding the truth and equal rights for every race, religion and creed are extremely important to me."
4 / 10
The Grammy Award-winner has identified himself both as Scientologist and as Jewish. Although he has been involved with the Church of Scientology for a while, the American singer opened up about it for the first time in 2005 and explained that he grew up around it, since his father is also a Scientologist
5 / 10
Also known as "Donna" in That 70's Show, Laura Prepon has been a Scientologist since the late 1990's. A couple of years ago, after some fans speculated about a possible conflict between Prepon's religious beliefs and the LGBT storylines of her character "Alex" in Orange is the New Black, she said: "I’ve been a Scientologist since 1999 and I’ve never come across any piece of info that’s negative or derogatory towards the LGBT community"
6 / 10
The Mission: Impossible actor is probably one of the most prominent figures within the Church of Scientology and has actually promoted it as a religion across Europe. After being involved with Scientology for the first time in 1990 through his first wife Mimi Rogers, Tom Cruise has said that Scientology helped him overcome different personal issues like dyslexia
7 / 10
Jenna Elfmann became a member of the Church of Scientology after her husband Bodhi introduced her to its teachings. The Dharma & Greg star has attended several events related to the organization, like the Human Rights Hero Award event in participation with the Scientology-affiliated groups Youth for Human Rights International and Artists for Human Rights
8 / 10
Priscilla Presley has been a Scientologist for several years. In 2017 there were rumours about her leaving the Church of Scientology but she immediately denied everything
9 / 10
Jerry Seinfeld is not an active member of the Church of Scientology but he once revealed that he studied the religion when he was younger in order to explore new things... and of course he joked about it: "The only thing that bothers me about people knowing that, is that it is not my complete wacko resumée. It’s just one aspect!", said the 65-year-old comedian during an interview with "Today"
10 / 10
Leah Remini joined the Church of Scientology when she was nine years old, however, she left it in 2013 and now she is a Scientology critic. She released Scientology and the Aftermath which is a docuseries that discusses the controversial truth of the church of Scientology and which has gained a lot of public attention in the past months