Lamentin (French pronunciation: [lamɑ̃tɛ̃]; Guadeloupean Creole: Manten or Lamanten) is a commune in the French overseas department and region of Guadeloupe.

Three islets are included in the commune: Christopher, Fajou, Caret.

Founded in 1720 in the commune's name comes from a French word for manatee (lamantin), a sea creature which used to inhabit the Lesser Antilles.

In the 18th century, the commune underwent a boom, down to coffee, caco, cotton and sugar cane.

In 1920, a cyclone destroyed the mayor's office and presbytery, which have since been rebuilt by Ali Tur.