MMI may refer to:

Science and technology Man-machine interface or user interface GSM Man-Machine Interface, a mobile telephony standard, see Unstructured Supplementary Service Data § Man-Machine Interface Modified Mercalli intensity scale, an earthquake intensity measure W3C MMI or Multimodal Interaction Activity Monolithic Memories, Inc. (1969–1987), an American semiconductor manufacturer Motorola Mobility (NYSE: MMI), a publicly traded electronics company, formerly part of Motorola Multi Media Interface, an in-car interface system developed by Audi Maximum mutual information criterion Methimazole, a drug used to treat hyperthyroidism Multi mode interferometer Modified Mecalli Index

Music Miss May I, a metalcore band from Ohio Madurai Mani Iyer, Indian singer

Schools Marion Military Institute, a military junior college in Marion, Alabama Marymount International School of Rome, a private Catholic school in Rome, Italy Miami Military Institute, a former military college that was located in Germantown, Ohio Millersburg Military Institute, a defunct military school in Kentucky MMI Preparatory School, a college preparatory school in Freeland, Pennsylvania Motorcycle Mechanics Institute, a program of the Universal Technical Institute

Other uses 2001 (year) 2001 or MMI in Roman numerals Manufacturers Mutual Insurance, a former Australian insurance company, now called Allianz Australia Municipal Mutual Insurance, a British insurance company Maximum medical improvement, a plateau in a person's healing process McMinn County Airport's identification code Multiple mini interview, an interview method to assess soft skills Muslim Mosque, Inc., an organization founded by Malcolm X NYSE Arca Major Market Index

See also 2001 (disambiguation)