U
- (Ezza North) Umughara
- (Ohaukwu) Umuezeoka-Iza
- (Ohaukwu) Umuakpo-Mgbo
- (Ohaukwu) Umuezaka Ngbo
- (Ebonyi) Umuaru-Ezza
- (Ezza North) Umuaru Clan
- (Ezza North) Umuaghara
- (Ebonyi) Umuigwe
- (Abakaliki) Uburu-Amachi
- (Izzi) Usoenyim
- (Ohaukwu) Umuezeka
- (Ezza South) Umueze-Akwa
- (Ezza South) Umueze-Okoha
- (Abakaliki) Umuome
- (Ezza South) Umu-Aka
- (Ikwo) Ubiagu
- (Ikwo) Ubuagu-Eleki
- (Ikwo) Ume-Igbudu
- (Ikwo) Ukwanyim
- (Izzi) Ujama
- (Ohaukwu) Ugede-Effium
- (Ikwo) Umuta
- (Ohaozara) Umunuka
- (Ohaozara) Umuka
- (Ohaukwu) Umuezekaoha
- (Ohaukwu) Umuezaka
- (Ezza North) Umuezeaka
- (Ohaukwu) Umachalu
- (Onicha) Ugulangu
- (Afikpo North) Uguago