Butuanon (Binutwanon, ) is an Austronesian language spoken by the Butuanon people in Agusan del Norte and Agusan del Sur, with some native speakers in Misamis Oriental and Surigao del Norte. It is a part of the Bisayan language family and is closely related to other Philippine languages. As of 2007, Butuanon is believed to be spoken by fewer than 500 younger speakers in Butuan itself. Butuanon is very closely related to the Tausug language of distant Sulu and the Surigaonon language of neighboring provinces Surigao del Sur and Surigao del Norte.

Phonology

Vowels

Butuanon has three vowels: /a/, /i/, and /u/, with phonemic length.

Consonants

Stress

Stress is phonemic in Butuanon and can be on either the penultimate or the final syllable.

Grammar

Morphosyntactic alignment

Butuanon has four triggers:

Pronouns