Cozumel is an island and municipality in the Caribbean Sea off the eastern coast of Mexico's Yucatán Peninsula, opposite Playa del Carmen, and close to the Yucatán Channel. The municipality is part of the state of Quintana Roo, Mexico.
The economy of Cozumel is based on tourism, with visitors able to benefit from the island's balnearios, scuba diving, and snorkeling. The main town on the island is San Miguel de Cozumel.
The principal seaport and former capital (until 1970) of Belize; population 65,200 (est. 2008).