Calabasas is an affluent city in Los Angeles County, California. It is located in the hills in the southwestern San Fernando Valley and the Santa Monica Mountains between Woodland Hills, Agoura Hills, West Hills, and Malibu.

The Leonis Adobe, an adobe structure in Old Town Calabasas, dates from 1844 and is one of the oldest buildings in the greater Los Angeles area. In July 2008, the City completed construction of a Gold LEED certified Civic Center and Library complex. Located at 100 Civic Center Way, the two building complex is the first municipal-owned and constructed 'green' civic center structure in the state of California.  The area continues to be home to a significant technology presence.

Notable residents are Jerry O'Connell and Rebecca Romijn - actors, Melissa Sue Anderson - actress, Danny Bonaduce - actor, Charles Bronson - actor, Rod Carew - athlete, Lynda Carter - actress and singer, Ron Cey - baseball player, Susan Dey - actress, all five original members of Incubus were born and raised in Calabasas and The Kardashians.  The Kardashian boutique called DASH is also located in Calabasas.