Mii, or MII, may also refer to:

  • 1002, the year or the number, in Roman numerals
  • Major Industry Identifier, part of ISO/IEC 7812
  • Maritime Institute of Ireland, who operate the National Maritime Museum of Ireland
  • Media Independent Interface, in Ethernet hardware
  • Medium Independent Interface, in the ITU-T G.hn standard for high-speed networking over home wires
  • MII, cost estimating software developed for the United States Army Corps of Engineers by Project Time & Cost, Inc.
  • MII (videocassette format), a professional video tape format developed by Panasonic
  • Cyrix 6x86, an x86 architecture CPU by Cyrix also known as "MII"
  • Mineral Information Institute, an American educational institute dedicated to teaching schoolchildren about natural resources
  • Ministry of Information Industry of the People's Republic of China, a former ministry of the State Council of the People's Republic of China, precursor to the MIIT
  • Mutual Information Index
  • Mii (Jungle de Ikou!), the busty Goddess of Fertility in Jungle de Ikou!
  • Mii, one of the main characters from Popotan
  • SEAT Mii, a small car by SEAT