Santa Clarita, officially the City of Santa Clarita, is the third largest city in Los Angeles County, California, and the seventeenth largest in the state of California. The city has annexed a number of unincorporated areas, contributing to the large population increase. It is located about 35 miles (56 km) northwest of downtown Los Angeles, and occupies most of the Santa Clarita Valley.

Santa Clarita was incorporated in December 1987 as the union of four unincorporated communities, including Canyon Country, Newhall, Saugus, and Valencia, all of which are situated on the land of the former Rancho San Francisco.

Santa Clarita is often associated with the Six Flags Magic Mountain amusement park, though the park is located just outside the city limits, and the California Institute of the Arts (CalArts), located in Valencia.