San Ignacio is a palm oasis town in the Mexican state of Baja California Sur, located between Guerrero Negro and Santa Rosalía. The town has a population of about 4,000 and grew at the site of the Cochimí settlement of Kadakaamán and the Jesuit Mission San Ignacio founded in 1728 by Juan Bautista Luyando.

At San Ignacio, Baja California's arid Central Desert terrain gives way to a large grove of lush green date palms. A large spring-fed pond and small river on the outskirts of town feeds into the central plaza and village next to the eighteenth-century Jesuit mission. San Ignacio serves as the gateway to San Ignacio Lagoon, the winter time sanctuary of the Pacific Gray Whale.