Santa Cruz Island is a privately owned island off the coast of California. It is part of the northern group of the Channel Islands of California and is the largest of the eight islands in the chain.
Nine-tenths of Santa Cruz has been owned by The Nature Conservancy since 1987, when it was willed to that group by owner Carey Stanton. The remaining one-tenth once belonged to the Gherini family and is now part of the Channel Islands National Park.