- Source: Koiwat language
Koiwat is one of the Ndu languages of Sepik River region of northern Papua New Guinea.
It is spoken in Kamangaui (4.116371°S 143.593484°E / -4.116371; 143.593484 (Kamangaui)), Koiwat (4.089795°S 143.555238°E / -4.089795; 143.555238 (Koiwut)), Paiambit (4.11068°S 143.69616°E / -4.11068; 143.69616 (Paimbit)), and Seraba (4.063985°S 143.629118°E / -4.063985; 143.629118 (Sarapa)) villages of Koiwat ward, Angoram/Middle Sepik Rural LLG, East Sepik Province.