Mariana Grajales Airport (IATA: GAO, ICAO: MUGT) is an airport serving Guantánamo, a city in Cuba.

[1] It is located near the villages of Paraguay and Las Lajas.

The airport is named after Mariana Grajales Cuello.

The runway was built during World War II by the US Navy as a reserve airfield for the US Guantanamo Bay Naval Base.

The airport resides at an elevation of 17 m (56 ft) above mean sea level.