The Writers Guild of America West (WGAW) is a prominent labor union representing professional writers in the entertainment and broadcast industries across the western United States. It advocates for the creative and economic rights of its members, who work in film, television, radio, and new media. The union negotiates collective bargaining agreements with studios and production companies, covering compensation, residuals, creative rights, and working conditions for its members.

Formed in 1954 through the merger of five distinct writers' organizations, including the influential Screen Writers Guild, WGAW has a long history of protecting writers' interests. It operates as one of two sister guilds, the other being the Writers Guild of America, East (WGAE), which together form the Writers Guild of America (WGA) for national collective bargaining purposes, particularly during major contract negotiations.

As of 2025, WGAW represents approximately 17,000 members, playing a critical role in shaping the landscape of content creation in Hollywood and beyond, often engaging in high-stakes negotiations and, when necessary, industrial actions like strikes to achieve its objectives.