Westwood Studios (known as Westwood Associates from 1985 to 1992) was a video game development company founded in 1985 by Louis Castle and Brett Sperry, and specialized in role-playing games and real-time strategies. The studio was famous for popularizing the real-time strategy genre with Dune II and their proprietary Command & Conquer series. Following a peak of popularity in the 1990s and early 2000s under the leadership of Virgin Interactive and, later, Electronic Arts, the studio was disbanded in 2003.

In 2015, Brett Sperry and Louis Castle received the Industry Icon award at The Game Awards in the name of Westwood Studios.