| Acronym | Definition |
|---|
| MOC | Maintenance of Certification |
| MOC | Mars Orbiter Camera |
| MOC | Microsoft Official Curriculum |
| MOC | Ministry of Commerce (Cambodia) |
| MOC | Market On Close (commodity trading term) |
| MOC | Management Of Change |
| MOC | meridional overturning circulation |
| MOC | Ministry of Construction |
| MOC | Mount Olive College |
| MOC | Microsoft Office Communicator |
| MOC | Ministry of Culture |
| MOC | Mission Operations Center |
| MOC | Music On Console (console audio player for Linux/UNIX) |
| MOC | Mint On Card |
| MOC | Ministry Of Communication |
| MOC | My Own Creation (Lego) |
| MOC | Mars Observer Camera |
| MOC | Member of Congress |
| MOC | Models of Computation |
| MOC | Master of Ceremonies |
| MOC | Match on Card |
| MOC | Maintenance Operations Center |
| MOC | Maritime Operations Center |
| MOC | Marriage of Convenience (personal ads) |
| MOC | Model of Care |
| MOC | Materials of Construction |
| MoC | Ministry of Coal (India) |
| MOC | Mission Operations Control (Center) |
| MOC | Managed Object Class(es) |
| MOC | Mail-Order Company |
| MOC | Massachusetts Oilheat Council |
| MOC | Minimum Obstacle Clearance (aviation) |
| MOC | Military Order of the Cootie (VFW) |
| MOC | Mobile Operations Center |
| MOC | Managing Organizational Change |
| MOC | Means of Compliance (aircraft) |
| MOC | MERS Operations Center |
| MOC | Mobile Originated Call (Global System for Mobile Communication) |
| MOC | Minimum Oxygen Concentration (for Combustion; Chemical Engineering) |
| MOC | Media Operations Center |
| MOC | Medical Operations Center |
| MOC | Military Operations Center |
| MOC | Major Oil Company |
| MOC | Maintenance Operational Check |
| MOC | Miata Owners Club |
| MOC | Mobile Office Card |
| MOC | Mystérieux Objets Célestes (French: mysterious celestial objects) |
| MOC | Management Operating Committee |
| MOC | Margin of Control (criticality) |
| MOC | Management and Operating Contractor |
| MOC | Mother of Child |
| MOC | Mission Operations Contractor |
| MOC | MILSTAR Operations Center |
| MOC | Mission Operations Contract |
| MOC | Maintenance, Operations and Construction |
| MOC | Model of Control |
| MOC | Method Of Command |
| MOC | Modulus of Continuity |
| MOC | Maintenance on Call (technical working environment) |
| MOC | Mission Observation Center |
| MOC | Missile Operations Center |
| MOC | Maintenance Operating Center |
| MOC | Meteorological Operational Capability |
| MOC | Materials Only Costing |
| MOC | Master Ordnance Configuration |
| MOC | Military Occupational Career (Canadian Forces) |
| MOC | Middle of Curve (engineering) |
| MOC | Materiel Operations Center |
| MOC | Multiple Orthogonal Code(s) |
| MOC | Master Operational Computer |
| MOC | Minimum Overtime Credit (on overtime forms) |
| MOC | Mission Operations Commander |
| MOC | Memorandum of Conference (meeting record) |
| MOC | Materiel Obligation Code |
| MOC | Multiple On Capital |