The initials MDU may refer to:
- Mains distribution unit, electrical device
- Maharishi Dayanand University in Rohtak, Haryana, India
- Manchester Debating Union
- McGill Debating Union, a student-run debating society at McGill University.
- Medical Defence Union, medical defence organisation providing legal support should its members' clinical competence be questioned
- Methylene diurea, a chemical compound
- Military Democratic Union (Unión Militar Democrática), clandestine Spanish organisation of military officers in the late- and post-Franco era.
- MingDao University, a university in Changhua County, Taiwan
- MDU Resources (Montana-Dakota Utilities), American diversified energy company
- Multi-dwelling unit, classification of housing
- MDU, IATA airport code of Mendi Airport in Papua New Guinea
- MDU, Indian Railways station code of Madurai Junction railway station in Tamil Nadu, India
If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: