[2]Isoko people are an ethnolinguistic group who inhabit the Isoko region of Delta State and Bayelsa State, Nigeria.

[3] They are people of southern Nigeria, near the northwestern Niger delta.

James W. Welch asserted erroneously that Isoko language cluster is a dialect of Urhobo language.

[1] Urhobo are related in language and culture, leading to the invaders erroneously labelling the Urhobo and Isoko cultural groups as Sobo.

[7][8] The Isoko ethnic group consist of nineteen clans ,namely: Uzere, Ozoro, Erowha, Owhe, Iyede, Okpe, Emede, Igbide, Emevor, Ofagbe, Ellu, Oyede, Umeh, Irri, Aviara, Olomoro, Enwhe, Okpolo and Oleh.