Isla Cerralvo (Spanish: [ˈisla seˈralβo]), as is commonly named, whose official name is Isla Jacques Cousteau (French: [ʒak kusto]; Spanish: [ʝak ˈkusto]), is an island located off the Cerralvo Canal coast near La Paz, Baja California Sur, Mexico.

The island peak comes to 2,100 ft (640 m) and the ridge line runs north–south with many small streams draining east to Gulf of California and west to Cupalo Canal.

Virtually all local marine life must migrate past the island, and water visibility goes up to 30 meters, making it a prime location for big game fishing.

There are abundant yellowtail, golden grouper, marlin, sailfish, swordfish or broadbill, other game, and bait fish in Cerralvo Canal waters.

Also senator Francisco Javier Obregón Espinoza has introduced a resolution in the Mexican Congress requesting the name change be reversed.