Rancho San Lorenzo may refer to these Mexican land grants in California: Rancho San Lorenzo (Castro), 1841, in Hayward, San Lorenzo, and Castro Valley Rancho San Lorenzo (Randall), 1842, in Monterey County Rancho San Lorenzo (Sanchez), 1846, in San Benito and Monterey Counties Rancho San Lorenzo (Soberanes), 1841, in Salinas Valley, Monterey County