The Marieta Islands (Spanish: Islas Marietas) are a group of small uninhabited islands a few miles off the coast of the state of Nayarit, Mexico, located in federal waters approximately 7.9 kilometres (4.9 mi) southwest of the peninsula known as Punta de Mita, in the municipality of Bahía de Banderas.

The islands are a popular tourist destination because of the abundant marine life populations due to the islands being protected from fishing and hunting by the Mexican government. The ocean water depth around the islands is between 70 and 110 feet.