The numbers refer to wikipaedia footnotes.

General celebrities
* Kirstie Alley [4][5], actress
* Anne Archer [4], actress (her son, Tom Davis, runs the Los Angeles "Celebrity Centre")
* Carl Anderson [6], singer
* Jennifer Aspen [2], actress
* James Barbour [7], Broadway actor
* Lynsey Bartilson [8], actress
* Beck [4][9], musician
* Catherine Bell [10], actress
* Karen Black, actress [3]
* Sonny Bono (deceased 1998) [11], musician and member of U.S. House from California (claimed Catholicism on campaign biographies)
* David Campbell [12], musician, composer, arranger
* Nancy Cartwright [11][9], voice over artist, most famous as the voice of Bart Simpson
* Kate Ceberano [13], actress and musician
* Erika Christensen [4], actress
* Chick Corea [4], musician
* Tom Cruise [4], actor (raised Catholic, according to Parade; attended a Franciscan seminary in Cincinnati and aspired to become a Catholic priest)
* Sky Dayton [14], founder and Chairman of the Board of EarthLink
* Doug Dohring [15], ex-owner of Neopets
* Jason Dohring [16], actor
* Plácido Domingo Jr. [4], opera singer
* Bodhi Elfman [5], actor
* Jenna Elfman [4], actress (Dharma and Greg), raised Catholic
* Doug E. Fresh [9], hip-hop musician
* Kenton Gray [6], car and motorcycle race driver
* Paul Haggis [17], director
* Isaac Hayes [4], musician, actor, and formerly voiceover artist ("Chef" from "South Park")
* Katie Holmes [18], actress (born and raised Catholic), introduced to Scientology by fiancé Tom Cruise
* Nicky Hopkins [19], musician (deceased 1994)
* Tyler Hynes [7], actor
* Mark Isham [20], musician
* Milton Katselas [4], acting teacher
* Chaka Khan [9], singer
* Jason Lee [1], actor ("My Name is Earl", "Mallrats") and professional skateboarder
* Geoffrey Lewis [1], actor
* Johnny Lewis,[1] actor
* Juliette Lewis [4], actress
* Christopher Masterson [1], actor
* Danny Masterson [1], actor
* Lisa McPherson (deceased 1995), died at Fort Harrison Hotel[21]
* Peter Medak [22], director
* Jim Meskimen [23], actor and improviser
* Sofia Milos[24][25], actress (CSI: Miami)
* Floyd Mutrux [26], writer, director and producer
* Haywood Nelson [27], actor
* Marisol Nichols [28], actress
* Judy Norton [29], actress and musician
* Eduardo Palomo (deceased 2003)[30], actor, and his wife Carina Ricco[31], actress and musician
* Don Pearson [32], 'Management by Statistics' consultant
* Michael Peña [33], actor
* David Pomeranz [34], singer/songwriter
* Laura Prepon [35][36]
* Lisa Marie Presley [1], singer, Michael Jackson's ex-wife, and daughter of Elvis
* Priscilla Presley [1], actress and wife of Elvis
* Kelly Preston [37], actress and John Travolta's wife, raised Catholic.
* Leah Remini [1], actress
* Ernie Reyes, Jr. [34], actor [8]
* Giovanni Ribisi [1], actor, raised Scientologist.
* Marissa Ribisi [38] , actress, wife of Beck Hansen, sister of Giovanni Ribisi, raised Scientologist.
* Ruddy Rodriguez, actress [9]
* Elena Rogero [6], singer
* Mimi Rogers [4], actress (believed to not be active in the church anymore, but still holds the beliefs)
* Pablo Santos, actor [10] (deceased 2006)
* Jeffrey Scott, screenwriter [11]
* Billy Sheehan [39], rock bassist
* Eric Sherman, film consultant [12]
* David Singer [40], chiropractor, 'Management by Statistics' consultant
* Reed Slatkin [41], criminal ponzi scheme perpetrator
* Michelle Stafford [42], actress
* Ethan Suplee [43], actor
* John Travolta [4], actor, raised Catholic.
* Greta Van Susteren [10], host of On the Record with Greta Van Susteren on Fox News Channel
* Persia White [44], actress
* Edgar Winter [45], musician
* Bryan Zwan [46], founder and CEO of Digital Lightwave