American Screenwriters Association - national non-profit organization supporting screenwriters of all levels through networking meetings, industry contacts and screenplay competitions.

Conejo Screenwriters Guild - local support group for aspiring and professional writers in the entertainment industry.

Harvard Square Scriptwriters - screenwriter's network, offering script consulting, development, and review services.

Hong Kong Screenwriter's Guild

London Screenwriters' Workshop - provides on-line assistance as well as a programme of events aimed at new writers.

Manhattan Screenwriters Workshop - weekly sessions for serious writers.

Northwest Screenwriters Guild - organization of creative professionals specializing in feature films, television, children's programing, and interactive media.

Organization of Black Screenwriters - founded to address the lack of African American writers in the entertainment industry. Assists screenwriters in the creation of works for film and television.

Praxis Centre for Screenwriters - supports the production of Canadian feature films through screenplay development.

Texas Film Institute - offering non-profit workshops, conferences, artists-in-residence programs, screenwriting contests, and online resources for dramatic writing and independent film.

Wisconsin Screenwriters Forum - helping screenwriters hone their craft and connect to Hollywood. Offers newsletters, critiques, and writing contests.