Gros Michel (French pronunciation: [ɡʁo miʃɛl]), often translated and known as "Big Mike", is an export cultivar of banana and was, until the 1950s, the main variety grown. The physical properties of the Gros Michel make it an excellent export produce; its thick peel makes it resilient to bruising during transport and the dense bunches that it grows in make it easy to ship. However, due to its vulnerability to Panama disease, it has been almost entirely replaced in the banana industry by the Cavendish cultivar.

Gros Michel is a triploid cultivar of the wild banana Musa acuminata, belonging to the AAA group.

Its official designation is Musa acuminata (AAA Group) 'Gros Michel'.

Synonyms include:

Gros Michel is known as Guineo Gigante, Banano, and Plátano Roatán in Spanish. It is also known as Thihmwe in Burmese, กล้วยหอมทอง (Kluai hom thong) in Thailand, Pisang Ambon in Malay, and Chuối tiêu cao in Vietnamese.

French naturalist Nicolas Baudin carried a few corms of this banana from Southeast Asia, depositing them at a botanical garden on the Caribbean island of Martinique. In 1835, French botanist Jean François Pouyat carried Baudin's fruit from Martinique to Jamaica. Originally called the "Figue Baudin" ("Baudin's fig"), the fruits were later referred to as "Poyo", after their Jamaican importer; the origin of the name "Gros Michel" is unknown.

Gros Michel bananas were grown on massive plantations in Honduras, Costa Rica, and elsewhere in Central America. The variety was once the dominant export banana to Europe and North America, grown in Central America but, in the 1950s, Panama disease, a wilt caused by the fungus Fusarium oxysporum f.sp. cubense, wiped out vast tracts of Gros Michel plantations in Central America, though it is still grown on non-infected land throughout the region.

By the 1960s, the exporters of Gros Michel bananas were unable to keep trading such a susceptible cultivar, and they started growing resistant cultivars belonging to the Cavendish subgroup (another Musa acuminata AAA).