| Acronym | Definition |
|---|
| MIA | Missing In Action |
| MIA | Minneapolis Institute of Arts |
| MIA | Miami International Airport (Florida) |
| MIA | Marble Institute of America (Farmington, Michigan) |
| MIA | Made in America |
| MIA | Malaysian Institute of Accountants (Malaysia) |
| MIA | Maryland Insurance Administration (Baltimore, MD) |
| MIA | Miami-Dade Aviation Department |
| MIA | Malta International Airport |
| MIA | Motorsport Industry Association (UK) |
| MIA | Melbourne International Airport |
| MIA | Migration Institute of Australia |
| MIA | Mathangi Maya Arulpragasam (singer) |
| MIA | Montgomery Improvement Association |
| MIA | Meetings Industry Association |
| MIA | Masonry Institute of America |
| MIA | Murrumbidgee Irrigation Area (New South Wales, Australia) |
| MIA | Manifestación de Impacto Ambiental (Spanish: Expression of Environmental Impact; Mexico) |
| MIA | Microalbuminuria (nephrology) |
| MIA | Manila International Airport |
| MIA | Minister of Internal Affairs |
| MIA | Master of International Affairs |
| MIA | Mutual Improvement Association (formerly used by Church of Jesus Christ of Latter-Day Saints) |
| MIA | Mactan International Airport (Philippines) |
| MIA | Mobile Internet Access (GSM) |
| MIA | Military Intelligence Agency |
| MIA | Media Interface Adapter (part of a FO protocol) |
| MIA | Music Industry Arts |
| MIA | Middle Indo-Aryan (linguistics) |
| MIA | Marine Industries Association |
| MIA | Minimum IFR Altitude |
| MIA | Messianic Israel Alliance |
| MIA | Model-Independent Analysis |
| MIA | Meat Industry Authority |
| MIA | Misfits in Action (World Championship Wrestling) |
| MIA | Maine Innkeepers Association |
| MIA | Most Idle Agent (communication systems) |
| MIA | Missile Intelligence Agency |
| MIA | Mountain Instructors Award (UK) |
| MIA | Minnesota Institute of Art |
| MIA | Modal Interval Analysis |
| MIA | Manitoba Islamic Association (Canada) |
| MIA | Monosodium Iodoacetate (osteoarthritis animal model) |
| MIA | English Marine Insurance Act |
| MIA | Montessori Institute of Atlanta (Atlanta, GA) |
| MIA | Marine Interdiction Agent (US CBP) |
| MIA | Mobile Intelligent Agent |
| MIA | Multinational Insurance Arrangement |
| MIA | Management Information and Analysis |
| MIA | Managed Internet Access (telecommunications) |
| MIA | Management Initiated Attrition |
| MIA | Military Intelligence Archives (St. Petersburg) |
| MIA | Matroid Intersection Algorithm |
| MIA | Malaysia International Aerospace Exhibition |
| MIA | Multiplex Interface Adapter |
| MIA | Mirror Image Acquisition |
| MIA | Manager-Is-Alive |
| MIA | Manual Incident Action/Actuation |
| MIA | Multiplicative Integral Approximation |
| MIA | Magazine Index Assembler |
| MIA | Mutual Information Approach |
| MIA | Missing If Construct Around Statements (software fault) |
| MIA | Mandatory Instructor Assistance |
| MIA | Minor in Attendance (citation) |
| MIA | Munitions Inerting Area |
| MIA | Museum of Islamic Art (various locations) |
| MIA | Media International Australia (est. 1976) |
| MIA | Motor Industry Archives (UK) |