Cancun 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.

Cancun is just north of Mexico's Caribbean coast resort band known as the Riviera Maya. In older English-language documents, the city?s name is sometimes spelled "Cancoon", an attempt to convey the sound of the name.