The Guatemalan helmeted basilisk (Corytophanes percarinatus) is a species of lizard in the family Corytophanidae.

The species is native to Central America and southern Mexico.

C. percarinatus is found in El Salvador, Guatemala, Honduras, and southern Mexico (Chiapas).

[2] Other common names for C. percarinatus include keeled helmeted basilisk, keeled helmeted iguana, and turipache de hojarasca in Spanish.

[2] The preferred natural habitats of C. percarinatus are forest and savanna, at altitudes of 200–2,000 m (660–6,560 ft).