坎昆（Cancún，又名康昆），是墨西哥东南部一个城市，位于加勒比海沿岸，是世界著名的渡假胜地。

坎昆的气候宜人，平均气温介乎26－36°C之间。1970年代，墨西哥政府主力把坎昆发展成渡假胜地，现在每年有超过300万人到坎昆旅游，更包括一些名人明星等。坎昆有超过140家酒店，提供24000房间。23公里长的坎昆岛是渡假区的中心，部份渡假酒店十分豪华，临近加勒比海，海水清澈，在海里游泳的鱼亦清晰可见，不少旅客在这里潜水或乘游艇出海。坎昆附近有一些历史遗迹。

Cancún (/kɑːnˈkuːn/ or /kæn-/; Spanish pronunciation: [kaŋˈkun]) is a city in southeastern Mexico, located on the northeast coast of the Yucatán Peninsula in the Mexican state of Quintana Roo. It is an important renowned tourist destination in Mexico, as well as being the seat of the municipality of Benito Juárez. The city is located on the Caribbean Sea, and is one of the easternmost points in Mexico. Cancún is located 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.