The Gula Iro language (autonym kùláál) is a Bua language spoken by some 3,500 people (in 1991) north and east of Lake Iro in southern Chad, between the Bola and Salamat rivers. It has four dialects, according to Pairault: to which Ethnologue adds a fifth, Korintal (170 speakers), spoken in Tieou. Gula Iro is very closely related to Zan Gula and Bon Gula, but they are not mutually comprehensible.

Phonology

The consonants, along with their orthography, are: The vowels are: a, e, i, o, u, ɛ, ɩ, ɔ, ʋ. Nasalization (only on a, e, o) and length are both contrastive, and diphthongs can be formed. Tone is phonemic; each vowel must carry high or low tone.

Grammar

Typical word order is subject–verb–object. The basic subject pronouns are: ñó I, mó you (sg.), á he/she/it, pʋ́ we (exclusive), én we (inclusive), í you (pl.), ʋ́ they.