| Acronym | Definition |
|---|
| AMO | Accredited Management Organization |
| AMO | Addons.mozilla.org (website) |
| AMO | Association of Municipalities of Ontario (Canada) |
| AMO | Australian Music Online |
| AMO | Advanced Medical Optics, Inc. |
| AMO | Atomic Molecular and Optical |
| AMO | Atlantic Multidecadal Oscillation (weather pattern) |
| AMO | Approved Maintenance Organization |
| AMO | Application Management Outsourcing |
| AMO | America's Multimedia Online |
| AMO | Assistant Medical Officer |
| AMO | Application Maintenance Outsourcing |
| AMO | Aircraft Maintenance Officer |
| AMO | Asset Management Option (Unicenter) |
| AMO | American Maritime Officer |
| AMO | Automatic Monthly Order |
| AMO | Air Mass Zero |
| AMO | Aviation Medical Officer |
| AMO | Association Members Only |
| AMO | Alternant Molecular Orbital |
| AMO | Área Monetaria Óptima (Galician: Optimal Monetary Area) |
| AMO | Automation Management Office(r) |
| AMO | Association of Magisterial Officers (UK) |
| AMO | Association Mycologique de l'Ouest (French: Western Mycological Association) |
| AMO | Archery Manufacturers & Merchants Organization |
| AMO | Allied Meteorological Office |
| AMO | Assurance Management Office |
| AMO | Australian Mathematics Olympiad |
| AMO | Architectenvereniging van Mechelen en Omstreken (Dutch: Architect Association of Mechelen and Surroundings; Mechelen, Belgium) |
| AMO | Advanced Munitions Office |
| AMO | Air Movement Officer |
| AMO | Aerodrome Meteorological Office (Hong Kong) |
| AMO | Area Maintenance Office (USPS) |
| AMO | Advance Material Order |
| AMO | Assistant Manager for Operations |
| AMO | Acquisition Management Organization |
| AMO | Acquisition Management Officer |
| AMO | Authorized Military Official (US DoD) |
| AMO | Amphibious Military Operations |
| AMO | Ammunition Management Office |
| AMO | Arama Motoru Optimizasyonu (Turkish: Search Engine Optimization) |
| AMO | Association Of Malaysian Optometrists |
| AMO | A Miracle Occurs |