WMI

• Washington Mutual Inc, a former savings bank holding company
• Waste Management, Inc (former NYSE symbol), a provider of waste management services
• Water Missions International, an engineering organization providing safe water and sanitation following natural disasters
• West Michigan Railroad (reporting mark)
• Wildlife Management Institute, of which Ira Noel Gabrielson was a former president
• World Medicine Institute, located in Honolulu, Hawaii, United States, offering degrees in acupuncture and oriental medicine

• Windows Management Instrumentation, in Microsoft Windows operating systems, a set of extensions to the Windows Driver Model
• WMI (window manager), old name for wmii, the Window Manager Improved for the X Window System
• World manufacturer identifier, in a Vehicle Identification Number denoting the manufacturer of the vehicle and the region in which it was made
• Working Memory Index, part of the Wechsler Intelligence Scale for Children
• Warsaw Modlin Airport (IATA code), near Warsaw, Poland

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