Las Cruces (sometimes rendered Las Cruses, meaning the crosses in Spanish) is a former settlement and an archaic placename in Santa Barbara County, California. It lies at the split between California State Route 1, which travels north to Lompoc, and U.S. Route 101, which travels north to Buellton. The two routes coincide on the highway to the south through the Gaviota Gorge to the Gaviota Coast. The community lies within area code 805.

There was a post office at Las Cruces as early as 1876. The spot has long been a crossroads for travellers along the Central Coast. In the 19th century, Las Cruces "was an overnight stop-over for farmers delivering grain and other crops from the Santa Ynez Valley to the Gaviota Wharf."

Gaviota Hot Springs were originally known as Las Cruces Hot Springs because of its proximity to the village. Locals used the springs for bathing.

According to the 1941 American Guide to Santa Barbara, the settlement, "shaded by immense old sycamores, [was] a cluster of homes about an inn, a wayside store, and a garage. The spot was once a gathering place for early-California cattlemen who took their cattle through the pass and down to the old Gaviota Landing for shipment. In still earlier times, the region was a battleground during the tenacious wars between the coastal tribes and the Tulare Indians from the San Joaquín Valley." The population of Las Cruces in 1941 was 64 people. Las Cruces was fairly busy during World War II, when it attracted visitors from Camp Cooke, now Vandenberg Space Force Base. It was said to have been a "small community" as of the 1950s. The village is said to have been "obliterated" by highway construction. The Las Cruces village store was demolished in December 1967 to make way for the interchange.

• Chestnut, Merlyn (1993). The Gaviota Land: A Glimpse into California History from a Bend on El Camino Real. Santa Barbara: Fithian Press. ISBN 9781564740519.