Abkhaz, also known as Abkhazian, is a Northwest Caucasian language most closely related to Abaza. It is spoken mostly by the Abkhaz people. It is one of the official languages of Abkhazia, where around 100,000 people speak it. Furthermore, it is spoken by thousands of members of the Abkhazian diaspora in Turkey, Georgia's autonomous republic of Adjara, Syria, Jordan, and several Western countries. 27 October is the day of the Abkhazian language in Georgia.
Abkhaz is a Northwest Caucasian language and is thus related to Adyghe. The language of Abkhaz is especially close to Abaza, and they are sometimes considered dialects of the same language, Abazgi, of which the literary dialects of Abkhaz and Abaza are simply two ends of a dialect continuum. Grammatically, the two are very similar; however, the differences in phonology are substantial, it also contains elements characteristic of Kabardian; these are the main reasons for many others to prefer keeping the two separate, while others still refer to it as the Tapanta dialect of Abkhaz. Chirikba mentions that there are possible indications that proto-Northwest Caucasian, could have divided firstly into proto-Circassian and to proto-Ubykh-Abkhaz; Ubykh then being the closest relative to Abkhaz, with it only later on being influenced by Circassian.
There is not an agreed number of speakers of Abkhaz, and there are widely different numbers. It is agreed that today most of the Abkhaz people do not live in Abkhazia. In the census conducted by the Republic of Abkhazia in 2011, Abkhazians comprised 50.8% of the population, around 122,175 people; of these 92,838 speaking it natively. Only two of the original dialects are still spoken in Abkhazia. The Bzyp dialect is still spoken in its homeland northwest of Sukhumi, stretching from the Bzyp River to the western environs of Sukhumi and the Psyrtskha valley, whereas the Abzhywa dialect is spoken south-east of Sukhumi. The rest of the Abkhaz speaking population inhabits other neighbouring areas.