The acronym MAU can stand for:

  • Make-up air unit an air handler in an HVAC system that conditions 100% outside air
  • Marine Amphibious Unit in the United States Marines
  • Marvel Animated Universe
  • Massively Armored Unit in the game RF Online
  • Math Accelerator Unit, a floating-point accelerator that operates as a coprocessor
  • Media Access Unit or Multistation Access Unit in a Token Ring network
  • Medical Assessment Unit in a hospital
  • Medium Attachment Unit in an Ethernet network, also known as transceiver.
  • Modified Absorbance Unit, the level of allergen specific IgE
  • Monthly Active Users or Monthly Application User, metrics of web analytics
  • Musashino Art University
  • Mauldeth Road railway station