MDH may refer to:

Chemistry

  • Malate dehydrogenase
  • (S)-mandelate dehydrogenase
  • Methanol dehydrogenase (cytochrome c)
  • Methylenedioxyhydroxyamphetamine

Health and medicine

  • Manila Doctors Hospital, in Ermita, Manila, Philippines
  • Mater Dei Hospital, in Msida, Malta
  • Milton District Hospital, in Milton, Ontario, Canada
  • Minnesota Department of Health

Other uses

  • MDH (spice company), an Indian spice producer and seller
  • Maguindanao language (ISO 639-3: mdh)
  • Mayotte Division Honneur, association football league in Mayotte, France
  • Mälardalen University College (Mälardalens högskola; MdH), in Sweden
  • Minimum descent height, for aircraft landing; see List of aviation, avionics, aerospace and aeronautical abbreviations
  • Multidimensional hierarchical toolkit
  • Southern Illinois Airport (IATA: MDH)