| Acronym | Definition |
|---|
| RMO | Replication Management Objects |
| RMO | Reflectance Model |
| RMO | Raad voor Maatschappelijke Ontwikkeling |
| RMO | Resident Medical Officer |
| RMO | Recolhimento Mensal Obrigatório (Portugese: Monthly Mandatory Collection; Brazil) |
| RMO | Rijksmuseum Van Oudheden (Dutch National Museum of Antiquities; Leiden, The Netherlands) |
| RMO | Regimental Medical Officer (British Army; UK) |
| RMO | Resource Management Office |
| RMO | Responsible Managing Officer |
| RMO | Références Médicales Opposables (French: Opposable Medical References) |
| RMO | Risk Management Option |
| RMO | Regional Medical Officer |
| RMO | Records Management Office |
| RMO | Rocky Mountain Orthodontics (Denver, CO) |
| RMO | Registered Medical Officer (UK) |
| RMO | Rocky Mountain Oysters |
| RMO | Rude Mechanical Orchestra (New York City radical marching band and dance troupe) |
| RMO | Redundancy Modification Order (UK) |
| RMO | Refrigeration Machine Operator (license) |
| RMO | Responsible Management Official (US NIH) |
| RMO | Reputation Management Online (social media) |
| RMO | Regional Mathematical Olympiad (India) |
| RMO | Rocky Mountain Outfitters (Utah; est. 1997) |
| RMO | Recruitment Management Organization |
| RMO | Range Management Office |
| RMO | Replication Management Object |
| RMO | Road Management Objectives (US Forestry Service) |
| RMO | Roll My Own (programming) |
| RMO | Round Metal Object |
| RMO | Requirements Management Office |
| RMO | Resident Management Office |
| RMO | Records Management Official |
| RMO | Radar Management Officer |
| RMO | Row Major Order |
| RMO | Réception Mariage Organisation (French: Wedding Reception Organization) |
| RMO | Revenue Management Operations |
| RMO | Registered Mail Officer |
| RMO | Route Management Organization |
| RMO | Retrieval Mode Operations |
| RMO | Range of Military Options |
| RMO | Risk Management Office/Officer |