Bartolomé Masó (Spanish pronunciation: [baɾtoloˈme maˈso]) is a municipality and town in the Granma Province of Cuba.
The municipality was named after the Cuban patriot Bartolomé Masó Márquez. It is the home of the Comandancia General de La Plata, headquarters of the Cuban revolutionaries around Fidel Castro and today a museum, located in the Sierra Maestra mountains.
In 2004, the municipality of Bartolomé Masó had a population of 53,024. With a total area of 629 km2 (243 sq mi), it has a population density of 84.3/km2 (218/sq mi).