The Isokos are an ethnolinguistic group who inhabit the Isoko region of Delta State and Bayelsa State, Nigeria. They are people of southern Nigeria, near the northwestern Niger delta. They speak the Isoko language – a language of the Kwa branch of the Niger-Congo family.
The Isoko culture is related to several cultures in the Niger-Delta – namely the Urhobo, Ijaw and Anioma. The Urhobo are closely related in language and culture, leading to the invaders erroneously labelling the Urhobo and Isoko cultural groups as Sobo. This name was strongly rejected by both tribes.