The mangrove pitta (Pitta megarhyncha) is a species of passerine bird in the family Pittidae native to the eastern Indian Subcontinent and western Southeast Asia. It is part of a superspecies where it is placed with the Indian pitta, the fairy pitta and the blue-winged pitta but has no recognized subspecies. A colourful bird, it has a black head with brown crown, white throat, greenish upper parts, buff underparts and reddish vent area. Its range extends from India to Malaysia and Indonesia. It is found in mangrove and nipa palm forests where it feeds on crustaceans, mollusks and insects. Its call, sometimes rendered as wieuw-wieuw, is sung from a high perch on a mangrove tree.
Measuring 18 to 21 cm in length, the mangrove pitta has a black head with a buff-coloured crown, white chin and buff underparts. The shoulders and mantle are greenish and the vent is reddish. Juveniles have similar patterned plumage but are duller. It resembles the blue-winged pitta but can be distinguished by its much heavier bill. Its call, transcribed as wieuw-wieuw has been noted to be "more slurred" than the blue-winged pitta.