Cruise is the Church’s poster boy. He became involved with the church in 1990 via his then-wife, Mimi Rogers.
The 'King of Queens' star was raised in the religion since age nine but left it in 2013.
The 'Orange Is the New Black' actress is a practicing Scientologist and has been since 1999.
The 'Handmaid’s Tale' actress was raised in the faith and continues to practice, though she rarely discusses it publicly.
The musician is a second-generation Scientologist who’s been involved in it most of his life.
The 'Ant-Man' actor joined the Church after watching a Jenna Elfman interview with Barbara Walters in the late 1990s.
The 'Natural Born Killers' actress is a longtime Scientologist and vocal defender of the religion.
One of Hollywood’s biggest names is said to have taken a couple of courses on Scientology in the early 1990s when he was dating Juliette Lewis.
The 'Walking Dead' actress was raised in the Church of Scientology.
The 'That '70s Show' star is Reaiche's stepson and remains involved in the religion.
The 'Sneaky Pete' who is also known for his recurring roles in 'My Name Is Earl' and 'Friends' is an active and longtime Scientologist.
The actress and spokesmodel became interested in Scientology after moving to Los Angeles in the 1970s.
Right there with Cruise, Travolta is one of the Church’s most highly prized members.
Though Elvis Presley reportedly said “F*ck those people” after visiting a Scientology center, his daughter was indoctrinated in the 1970s by her mother, Priscilla Presley.
The actress joined the Church upon her marriage to Tom Cruise.
The 'Dharma & Greg' actress is an outspoken supporter and member of the Church of Scientology.
The prolific actress was exposed to the faith as a child through her father, who was a member and friends with L. Ron Hubbard.
Another of Tom Cruise's former wives, Kidman became involved around the same time as their marriage in 1990.
The 'Superman' star discussed his dabbling in Scientology in his 2002 book 'Nothing Is Impossible: Reflections on a New Life.'
The 'Parenthood' actress was raised in the Church by her parents who also chose to homeschool her.
The rapper best known for pioneering beatboxing joined the faith in the early 2000s and isn’t afraid to defend it.
The marriage of the 'My Name Is Earl' actor reportedly fell apart because of his commitment to Scientology, his ex-wife Carmen Llywelyn told Inside Edition.
The 'Army Wives' actress is an active member of the Church and has supported several organization affiliated with the faith.
The voice behind Bart Simpson, Cartwright joined the Church of Scientology in 1991.
The singer-songwriter and actor became involved in the faith in the early 1990s.
The 'Fatal Attraction' actress joined the Church in the mid-1970s and has remained active since.
The popular actor and comedian admitted he took courses on Scientology in his 30s and he is interested in self-help, he told Today.
Rumors connecting the power couple to the controversial religion abound, including Leah Remini's statements that Jada is a member.
The 'Arrested Development' actor was reported to be a Scientologist in 2007 in a New York Times Magazine article.
The cult leader reportedly said he followed Scientology in the 1970s, according to The Underground Bunker.
The famous American author dabbled in Scientology, his daughter told The New York Times. The eccentric writer pursued the religion alongside other belief systems, including homeopathy and Christian Science.
Only having been around since 1952, Scientology has skyrocketed in popularity throughout the years, with numerous famous faces having passed through its ranks. Isabella Cruise, daughter of Tom Cruise, recently penned a letter about the religion, gushing about her rewarding journey. The Cruise family clearly takes the religion very seriously, as there have been recent reports that Tom Cruise has banned Nicole Kidman from attending their son's wedding, as she is considered a "suppressive person" by the church.
However the Cruises aren't the only big names involved in the church. In this gallery, find out which other celebs have dabbled in Scientology—you may be surprised!
Scientology's shocking popularity in Hollywood
Isabella Cruise has recently penned a love letter to the religion
CELEBRITY Scientology
Only having been around since 1952, Scientology has skyrocketed in popularity throughout the years, with numerous famous faces having passed through its ranks. Isabella Cruise, daughter of Tom Cruise, recently penned a letter about the religion, gushing about her rewarding journey. The Cruise family clearly takes the religion very seriously, as there have been recent reports that Tom Cruise has banned Nicole Kidman from attending their son's wedding, as she is considered a "suppressive person" by the church.
However the Cruises aren't the only big names involved in the church. In this gallery, find out which other celebs have dabbled in Scientology—you may be surprised!