Isla Mujeres (Spanish pronunciation: [‘izla mu’xeɾes], Spanish for “Women Island”) is an island in the Caribbean Sea, about 13 kilometres (8.1 mi) off the Yucatán Peninsula coast. The island is some 7 kilometres (4.3 mi) long and 650 metres (2,130 ft) wide.

The island is part of the Isla Mujeres Municipality in the State of Quintana Roo, Mexico.

To the east is the Caribbean Sea with a strong surf and rocky coast, and to the west the skyline of Cancún can be seen across the clear waters. In the 2010 census, the namesake town on the island had a population of 12,642 inhabitants.