| Acronym | Definition |
|---|
| CMO | Chief Marketing Officer (various companies) |
| CMO | Chi-Mei Optoelectronics (TFT/LCD monitor technology) |
| CMO | Chief Medical Officer |
| CMO | Central Meteorological Observatory (Japan) |
| CMO | Crédit Mutuel Océan (French bank) |
| CMO | Congés de Maladie Ordinaire (French: Regular Sick Leave) |
| CMO | Communications and Marketing Office (various locations) |
| CMO | Cardiomyopathy |
| CMO | Campus Ministry Office (various locations) |
| CMO | Collateralized Mortgage Obligation |
| CMO | Cubic Mile of Oil (energy unit) |
| CMO | Chief Merchandising Officer (various companies) |
| CMO | Configuration Management Office |
| CMO | Court-Martial Order (US military) |
| CMO | Civil-Military Operations |
| CMO | Chemult (Amtrak station code; Chemult, OR) |
| CMO | Contractor Management Outsourcing |
| CMO | Care Management Organization |
| CMO | Creep Me Out |
| CMO | Communication Médiatisée par Ordinateur (French: Computer Mediated Communication) |
| CMO | Chief Military Observer (US DoD) |
| CMO | Contract Manufacturing Organisation |
| CMO | Contract Management Office |
| CMO | Centre Missionnaire Oblat (French: Oblate Missionary Center; Canada) |
| CMO | Chief Morale Officer (various organizations) |
| CMO | Constructions Modernes de l'Ouest (French: Modern Buildings of the West) |
| CMO | Current Market Outlook |
| CMO | Chief Magic Official (Disney job) |
| CMO | Check Me Out |
| CMO | Common Market Organization (European Union) |
| CMO | Care Management Officer (health care) |
| CMO | Cisco Mobile Office |
| CMO | Centre Militaire d'Océanographie (French: Military Oceanography Center) |
| CMO | Clezardin Machines et Outillages (French machinery manufacturer) |
| CMO | Contract Modification Order |
| CMO | Certificate Management Office |
| CMO | Count Me Out |
| CMO | Caribbean Meteorological Organization |
| CMO | Council of Ministers' Office (various organizations) |
| CMO | Construction Métallique de l'Ouest (French steel construction company) |
| CMO | Comfort Measures Only (similar to hospice care) |
| CMO | Configuration Management Office(r) |
| CMO | Carrelage et Moquette de l'Océan (French flooring company) |
| CMO | Crisis Management Operations |
| CMO | Customs Memorandum Order (Philippines) |
| CMO | Competitive Mounted Orienteering (equestrian sport) |
| CMO | Collections Management Office(r) (US DoD) |
| CMO | Central MASINT Office (now Central MASINT Organization) |
| CMO | Construction Modulaire Organisation (French: Modular Construction Organization) |
| CMO | Constructions Mécaniques Outillages (French: Mechanical Construction Tools) |
| CMO | Central Moneymarkets Office (UK banking) |
| CMO | Corticosterone Methyloxidase |
| CMO | City Managers Office |
| CMO | Central MASINT Organization (formerly Central MASINT Office) |
| CMO | Chief Maintenance Officer |
| CMO | Civil-Military Overview (NATO) |
| CMO | Centro Médico Oftálmico (Spanish: Ophthalmic Medical Center) |
| CMO | Civil-Military Officer |
| CMO | Cash Management Officer (job title) |
| CMO | Chief Mortgage Officer (various companies) |
| CMO | Canonical Molecular Orbital |
| CMO | Cincinnati Metropolitan Orchestra (Cincinnati, OH) |
| CMO | Collective Management Organization (World Intellectual Property Organization) |
| CMO | Current Mode of Operation |
| CMO | Catholic Media Office (UK) |
| CMO | Convoy Movement Order |
| CMO | Crisis Management Organization |
| CMO | Contract Manufacturing Operation |
| CMO | Chinese Mathematics Olympiad |
| CMO | Calculated Mean Organism |
| CMO | Carpathian Mountain Outreach (Ukraine) |
| CMO | Configuration Management Organization |
| CMO | Coverage Mission Order |
| CMO | Commodore's Messenger Organisation |
| CMO | Centro Médico Odescalchi (Italian) |
| CMO | Centrum Mot Olikfientlighet (Sweden) |
| CMO | Court of Military Order (Congo) |
| CMO | Corporate Manufacturing Objects |
| CMO | Chicago, St. Paul, Minneapolis, and Omaha Railroad |
| CMO | Cash Me Out (poker) |
| CMO | Chief Monitoring Officer |
| CMO | Communications Management Organization |
| CMO | Collection Management Office/Organization |
| CMO | Controlled Materials Officer |
| CMO | Community Manager's Office |
| CMO | Centralized Mortgage Obligation |
| CMO | Current Method of Operation |
| CMO | Clandestine Mission Objective |
| CMO | Circuit Management Office |