The Catalina Casino is a large gathering facility located in Avalon on Santa Catalina Island, off the coast of Los Angeles in California. It is the largest building on the island and the most visible landmark in Avalon Bay when approaching the island from the mainland.
The large building contains a movie theater, ballroom, and formerly an island art and history museum. The Catalina Casino gets its name from the Italian language term casino, meaning a "gathering place". Contrary to the current common usage of casino, this has never been a facility for gambling.