Spoken in Poronajsk District, Sakhalin Island, Poronajsk town, Gastello and Vakhrushev settlements; Nogliki District, Val village, Nogliki settlement. Also in Japan.

Uilta (also known as “Oroks” or “Orochens”) is one of the smallest people of the Russian Federation, which belongs to indigenous people of the island of Sakhalin. According to the census held in 2010, the number of population is 295 persons. They call themselves “uilta” (“of deer”, from the word “ula” which means deer).