Biak (referred to locally as wós Vyak ‘Biak Language’ or wós kovedi ‘Our Language’ and Bahasa Biak in Indonesian. Also known as: Biak-Numfor, Noefoor, Mafoor, Mefoor, Nufoor, Mafoorsch, Myfoorsch and Noefoorsch) is an Austronesian language which has been classified as one of 41 languages of the South Halmahera-West New Guinea subgroup of Eastern Malayo-Polynesian Languages. It is spoken in Biak and Numfor and numerous small islands in this archipelago in the province of Papua, Indonesia by about 30,000 people.

There are a number of different dialects of Biak spoken on various different Islands the most well-known being Biak-Numfoor, spoken on the Island of Numfoor, these dialect differences are small and mostly slight regular sound changes. Almost all Biak speakers are also fluent in Malay, but very few have a comprehensive knowledge of formal Indonesian.

Despite the comparatively high number of speakers compared to some other Austronesian languages, Biak is still in danger of extinction. Within the main towns the generation of speakers aged between 20 and 50 have only passive knowledge of the language and rarely use the language actively, instead preferring to use Malay. Younger generations do not even generally have passive knowledge of the language. Biak is only actively used as a spoken language by members of the community over 50 years of age or so and even they regularly code switch into Malay. However, within the villages further from town there were still children who were fluent in Biak. Songs in Biak are also very popular throughout the Islands.