The Fuyug language of Papua New Guinea is spoken by over 14,000 people in Central province: Goilala district, Owen Stanley range; and Oro province.

The language is classified as Trans-New Guinea, Southeast Goilalan. The ISO code is [fuy]. Alternate names include: Fujuge, Fuyuge, Fuyughe, Mafufu, and Mafulu. There are four dialects: Central Udab, Northeast Fuyug, North-South Udab, and West Fuyug. All four dialects are 90% cognate with each other (Bradshaw 2007).