Tags: Language.
Oi (Oy Oey; also known as The Thang Ong Sok) is a Mon–Khmer dialect cluster of Attapeu Province in southern Laos. According to Ethnologue the dominant variety is Oy proper with 15000 speakers who are 80% monolinguals. Speakers follow traditional religions. the 1995 Laotian census places the Oi population at 14947.