Leptophis mexicanus, commonly known as the Mexican parrot snake, is a species of medium-sized slender snake in the family Colubridae. The species is endemic to the Americas.

Geographic range: L. mexicanus can be found in southern Mexico and Central America, in Guatemala, Belize, Honduras, El Salvador, Nicaragua, and Costa Rica.

Subspecies: There are four recognized subspecies, including the nominate subspecies.

• L. m. hoeversi Henderson, 1976
• L. m. mexicanus A.M.C. Duméril, Bibron & A.H.A. Duméril, 1854
• L. m. septentrionalis Mertens, 1972
• L. m. yucatanensis Oliver, 1942