Eleutherodactylus inoptatus (common name: Diquini robber frog) is a species of frog in the family Eleutherodactylidae endemic to Hispaniola; it is found both in Haiti and the Dominican Republic. With female snout–vent length of about 88 mm (3.5 in), it is the largest eleutherodactylid frog.

Eleutherodactylus inoptatus is a common frog found in mesic hardwood forest. It can also live in coffee and banana plantations as long as there are trees and shade. It is impacted by habitat loss.

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