Effium is the largest autonomous Igbo community in Ebonyi State of southeast region, Nigeria.

Effium is located in the Ohaukwu local government area of Ebonyi State.

The major agricultural produce include: yam, cassava, rice, groundnut, palm oil and timbers.

Effium shares common boundaries with Izzi, Ngbo, Uli and Igumale.

It has a very large market popularly known as Effium main market among many others where agricultural commodities are purchased in large quantities and transported to other parts of the country and for export.