United Middle Belt Congress (UMBC) was a political party in Nigeria during the nation's First Republic.
Its establishment was an act to ensure an alternative minority voice in the Northern Nigeria Assembly which was dominated by the Northern People's Congress, a political party which the central Nigerian leaders felt had the potential to curb the middle belt's political voice.
In 1958, the UMBC entered into an alliance with the Southwest Nigeria dominant Action Group of Chief Obafemi Awolowo.
Some of the early leaders of the UMBC were Joseph Tarka, Akase Dowgo, David Lot, Patrick Dokotri, Edward Kundu Swem, Ahmadu Angara, Isaac Shaahu (Northern Assembly Opposition Leader), Solomon Lar, D. Bulus Biliyong, D.D.
The party adopted a decentralized nomination system whereby local ethnic unions or special committees in a given area nominated and presented candidates for local elections, this was partly used to validate the ethnic diversity of the party.