The midnight parrotfish (Scarus coelestinus) is a species of parrotfish that inhabits coral reefs mainly in the Caribbean, Bahamas, and Florida.

The typical size is between 30 and 60 cm, but it can grow to almost 1 m. It has been observed as far north as Maryland and as far south as Brazil. Usually found between 3 and 80 m deep, it swims over reefs and sandy areas, where it feeds on algae by scraping it with its teeth fused into a beak.