Boana exastis is a species of frog in the family Hylidae. It is endemic to the Northeast Region of Brazil and has been recorded from Bahia, Alagoas, and Pernambuco.
Boana exastisoccurs in the Atlantic forest domain at elevations of above sea level. Records have been made in primary forest with large trees and an abundance of epiphytes, adjacent to and in a forest edge, and cocoa plantations adjacent to the forest. Breeding presumably takes place in temporary pools or permanent streams. Threats to this species are unknown; its ability to persist in modified habitats such cocoa plantations remains to be seen.