Rancho Santa Margarita

This article refers to the San Luis Obispo County, California land grant. For the city of Rancho Santa Margarita, see Rancho Santa Margarita, California

Rancho Santa Margarita was a 17,735-acre (71.77 km) Mexican land grant in the Santa Lucia Mountains, in present day San Luis Obispo County, central California.

The rancho was granted by Governor pro tem Manuel Jimeno Casarin in 1841 to Joaquín Estrada. The grant encompassed present day Santa Margarita. It remains an active ranch.