Reginald Barclay as Cyrano de Bergerac
An actor, or player, was a person who portrayed a character in a performance and who worked in film, television, theater, or radio in that capacity. The term actress would sometimes be used to refer to a female in such a role. A bit player was one who had a small role in the performance.
During his studies of the philosophies of acting in the late 2360s – undertaken in order to improve his performance skills – Data found himself attracted to the concepts of method acting and studied the works of several famous method actors in order to improve his acting skills. (TNG: "Devil's Due")
Doctor Beverly Crusher was an accomplished actress and playwright. She formed a theater troupe aboard the USS Enterprise-D. (TNG: "The Nth Degree") At various points, her troupe included Will Riker, (TNG: "A Fistful of Datas", "Frame of Mind") Data, (TNG: "Frame of Mind") Geordi La Forge, (TNG: "Disaster") Reginald Barclay, (TNG: "The Nth Degree") and even Captain Jean-Luc Picard. (TNG: "A Fistful of Datas")
Professional actors 
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- Bud Abbott
- Stella Adler
- Gracie Allen
- Murray Alper
- Fred Astaire
- Ingrid Bergman
- Kenneth Branagh
- George Burns
- Colin Clive
- Gary Cooper
- Lou Costello
- Brandon De Wilde
- John Ford
- Dwight Frye
- Garnav
- Cary Grant
- Laurence Harvey
- Audrey Hepburn
- Bob Hope
- Moe Howard
- Jero
- Glynis Johns
- Anton Karidian
- Lenore Karidian
- Boris Karloff
- Danny Kaye
- Grace Kelly
- Kullnark
- Alan Ladd
- Burt Lancaster
- Layna
- Bela Lugosi
- Ekaterina Monjak
- Mildred Natwick
- Laurence Olivier
- Jack Palance
- Shapiro
- Frank Sinatra
- Alexander Smutkov
- Constantin Stanislavsky
- Tanis
- Sid Tomack
- John Wayne
- Mae West
- Richard Widmark
- Unnamed
