25. International Alliance of Theatrical Stage Employees (IATSE)
Total membership: 145,525
Description: Entertainment (theater, motion picture and television production, trade shows, television broadcasting and concerts)
Member of the AFL-CIO? Yes
20. Screen Actors Guild-American Federation of Television and Radio Artists (SAG-AFTRA)
Total membership: 243,853
Description: Actors, recording artists and broadcasters
Member of the AFL-CIO? Yes