Union Sportive de la Médina Bel Abbès (Arabic: الإتحاد الرياضي لمدينة بلعباس), known as USM Bel Abbès or simply USMBA for short, is an Algerian football club located in Sidi Bel Abbès, Algeria, that was founded in 1933 and its colors are green and red.

The team was founded on 7 February 1933 under the name of Union Sportive Musulmane de Bel Abbès.

Between 1977 and 1987, the club was parrained by ENIE, an electronic national society and was named Electronique Sari Madinat Bel Abbès (ESMBA).

On April 27, 2012, in the last round of the 2011-12 Algerian Ligue Professionnelle 2, USM Bel-Abbès beat USM Annaba 3–0 to finish third and win promotion to the Algerian Ligue Professionnelle 1, returning to the top flight after a 19-year absence.

The club used to play at the Stade des trois frères Amarouch.