BMU may refer to:
- BMU, the ISO-3166 code for Bermuda
- BMU, acronym for Bundesministerium für Umwelt, Naturschutz und Reaktorsicherheit, a ministry of the Federal Republic of Germany
- BMU, acronym for Business and Management University, today BMU Lebanese French University
- BMU 91.6 FM, an underground radio station based in Stockholm, Sweden
- BMU-1, acronym for Beachmaster Unit One, an amphibious unit of the United States Navy
- BMU-2, acronym for Beachmaster Unit Two, an amphibious unit of the United States Navy