The Cancún Underwater Museum is a non-profit organization based in Cancún, Mexico devoted to the art of conservation. The museum has a total of 500 sculptures, by a series of international and local sculptors, with three different galleries submerged between three and six meters deep in the ocean at the Cancún National Marine Park. The museum was thought up by Marine Park Director Jaime González Cano, with the objective of saving the nearby coral reefs by providing an alternative destination for divers. It was started in 2009 and officially opened in November 2010.

Cancún, often Cancun in English is a city in southeast Mexico on the northeast coast of the Yucatán Peninsula in the Mexican state of Quintana Roo. It is a significant tourist destination in Mexico and the seat of the municipality of Benito Juárez. The city is on the Caribbean Sea and is one of Mexico's easternmost points.