The Mariel boatlift was a mass emigration of Cubans who traveled from Cuba's Mariel Harbor to the United States between April 15 and October 31, 1980. The term "Marielito" is used to refer to these refugees in both Spanish and English. While the exodus was triggered by a sharp downturn in the Cuban economy, it followed on the heels of generations of Cubans who had immigrated to the United States in the preceding decades.

Mariel is a municipality and town in the Artemisa Province of Cuba. It is located approximately 40 kilometres (25 mi) west of the city of Havana.