MAU may refer to: Makeup air unit, a type of air handler that only conditions outside (not recirculated) air Marine Amphibious Unit, a former term for a marine expeditionary unit, the smallest air-ground task force in the United States Fleet Marine Force Medical Assessment Unit, or acute assessment unit, a short-stay department in some British, Australian, and New Zealand hospitals that may be linked with the emergency department Computing: Media Access Unit (or Multistation Access Unit), an interconnecting device used in a token ring network with a star topology Medium Attachment Unit, a transceiver in an Ethernet network Entertainment: Massively Armored Unit, a piece in the multiplayer game RF Online. Statistics: Monthly active users, a performance metric for the success of an internet product Places: Mauritania, UNDP country code Mauritius, ITU country code MAU, National Rail code for Mauldeth Road railway station in Manchester, UK Organizations Marathwada Agricultural University, former name of Vasantrao Naik Marathwada Krishi Vidyapeeth, an agriculture university in Parbhani, India Mizhnarodni Avialiniyi Ukrayiny (Ukraine International Airlines) Musashino Art University, a university in Kodaira, western Tokyo Science: mAU is the milli-absorbance unit, or 0.001 absorbance units (AU), used to measure absorbance See also Mau (disambiguation) de:MAU