Rancho Los Ojitos was a 8,900-acre (36 km2) Mexican land grant in present day Monterey County, California given in 1842 by Governor Juan Alvarado to Mariano de Jesus Soberanes. The grant is now mostly Lake San Antonio which was created when the San Antonio dam was built across the San Antonio River.
With secularization, the lands of the Mission San Antonio de Padua were divided into at least ten Mexican land grants (including Rancho Milpitas (Little Fields), Rancho El Piojo (The Louse), Rancho San Miguelito de Trinidad, and Rancho Los Ojitos (Little Springs) ). The Soberanes family partiarch, José Maria Soberanes (1753–1803) accompanied the Portola expedition to San Francisco Bay in 1769. Soberanes married Maria Josefa Castro (1759–1822) and received Rancho Buena Vista. His sons, Feliciano Soberanes (1788–1868) and Mariano de Jesus Soberanes, were granted Rancho El Alisal in 1833.
Mariano de Jesus Soberanes (1794–1859) was a soldier and also held the office of alcade in Monterey. Mariano Soberanes married María Isidora Vallejo (1791–1830), sister of General Mariano Guadalupe Vallejo. Their daughter, Maria Ygnacia Soberanes, married Dr. Edward Turner Bale grantee of Rancho Carne Humana. Mariano de Jesus Soberanes was granted Rancho San Bernardo and the two square league, former lands of the Mission San Antonio de Padua, Rancho Los Ojitos in 1842. In 1844, Mariano de Jesus Soberanes married Governor Alvarado's mistress, Maria Raimunda Castillo (1813–1880), the daughter of Jose Castillo and Zeferina Sinaloba of Monterey. In 1845 Soberanes was judge at . In 1846, during the Mexican–American War, Soberanes was arrested with his sons by soldiers of Frémont and his property at Rancho Los Ojitos destroyed.