| Acronym | Definition |
|---|
| MOP | Modern Organic Products (hair/skin care company) |
| MOP | Macau Pataca (ISO currency code) |
| MOP | Mother of Pearl |
| MOP | Measure(s) Of Performance |
| MOP | Member of Parliament (also seen as MP) |
| MOP | Mists of Pandaria (World of Warcraft expansion) |
| MOP | Meeting of the Parties (UN Framework Convention on Climate Change) |
| MOP | Month of Photography (various locations) |
| MOP | Massive Ordnance Penetrator (US DoD munition) |
| MOP | Ministry of Planning (various countries) |
| MOP | Middle of the Pack |
| MOP | Ministerio de Obras Publicas (Public Works Ministry, Chile) |
| MOP | Manager of Projects |
| MOP | Mitsui Outlet Park (Japan) |
| MOP | Manila Ocean Park (theme park; Philippines) |
| MOP | Military Operations |
| MOP | Method of Preservation |
| MOP | Meta Object Protocol |
| MOP | Master of Puppets (Metallica) |
| MOP | Means of Production |
| MOP | Muriate of Potash |
| MOP | Mini Oct-Lead Package |
| MOP | Maintenance Operations Protocol |
| MOP | Most Outstanding Player |
| MOP | Most Overclockable Product |
| MOP | Mode of Play |
| MOP | Manual of Procedures |
| MOP | Maintenance Operation Protocol |
| MOP | Member of the Public |
| MOP | Method of Payment |
| MOP | Ministry of Power (India) |
| MOP | Maximum Offering Price (mutual funds) |
| MOP | Means of Protection |
| MOP | Maximum Operating Pressure |
| MOP | Method of Procedure |
| MOP | Marine Option Program |
| MOP | Mothers Of Preschoolers |
| MOP | Mash Out Posse (band) |
| MOP | Master Operating Plan (various organizations) |
| MOP | Matheson Ormsby Prentice (law firm; Ireland) |
| MOP | My Own Prison (Creed album) |
| MOP | Maryland Office of Planning |
| MOP | Moon over Parador (film) |
| MOP | Missionaries of the Poor (religious order) |
| MOP | Multiple Offender Program (intoxicated driving) |
| MOP | Meter Operator (UK utility meters) |
| MOP | Movement of Personnel (United Nations) |
| MOP | Mortgage Origination Program |
| MOP | Mt. Pleasant, Michigan (Airport Code) |
| MOP | Memorandum Of Policy |
| MOP | Modify Operating Procedures |
| MOP | minimum operating pool |
| MOP | Ministry of Peace (internet information organization) |
| MOP | Michigan Organizing Project |
| MOP | Ministry of Peace (George Orwell, "1984") |
| MOP | Maximum Out-of-Pocket |
| MOP | Minimum Operating Price |
| MOP | Manual of the Planes (roleplaying games, Dungeons & Dragons) |
| MOP | Microwave Observing Project |
| MOP | Miscellaneous Operating Procedure (US EPA) |
| MOP | Multiple Original Prints |
| MOP | Manner Of Performance |
| MOP | Mission Operations Plan |
| MOP | Math Olympiad Program |
| MOP | Memory Organization Packet |
| MOP | Marge Opérationnelle (French accounting) |
| MOP | Maximum Overcurrent Protection |
| MOP | Motor Operated Potentiometer |
| MOP | Money over Personality |
| MOP | Magnetic Orange Pipe |
| MOP | Modern Persian (linguistics) |
| MOP | Method Of Purchase |
| MOP | Mean of Platts |
| MOP | Missouri Pacific Railroad Company |
| MOP | Minimum Output Power |
| MOP | Mouvement pour l'Organisation du Pays (French: Movement for the Organization of the Country, Haiti) |
| MOP | Memorandum Of Procedures |
| MOP | Memorandum of Participation |
| MOP | Mu Online Philippines (gaming) |
| MOP | Management Oversight Panel |
| MOP | Metal-Organic Polyhedra |
| MOP | Monthly Observing Plan |
| MOP | Mobility Operating Procedure |
| MOP | Millionaires on Paper |
| MOP | Monthly Obligation Plan |
| MOP | Maître Ouvrier Principal (French: Senior Master Craftsman) |
| MOP | Maintenance Operations Program |
| MOP | Message Output Processing |
| MOP | Meteorological Operational Programme |
| MOP | Minute of Program (broadcasting) |
| MOP | Maximum Oil Pressure |
| MOP | Mission Optimization Program |
| MOP | Management Oriented Process (quality management) |
| MOP | Multiple Output Program (NASA) |
| MOP | Modulation on the Pulse |
| MOP | Maintenance Outline Procedure |
| MOP | Maritime Operations Plot |
| MOP | Multiple Outlet Plenum (sheet metal) |
| MOP | Mere Oblivion Productions |
| MOP | Meter Options Pack (UK water industry) |
| MOP | Manufacturing Operations Oriented Plant |
| MOP | Maintenance Operational Procedures |
| MOP | Management Oriented Perspective |
| MOP | Modification of Procedure |
| MOP | Mission Outreach Program |
| MOP | Management Oversight Practice(s) |
| MOP | Menu of Problems |
| MOP | Mothers of Prodigals |
| MOP | Monthly Operating Plan |