| Acronym | Definition |
|---|
| PMO | Plymouth (Amtrak station code; Plymouth, NH) |
| PMO | Prime Minister's Office |
| PMO | Pisses Me Off |
| PMO | Put Me On |
| PMO | Porn, Masturbation, Orgasm |
| PMO | Portmaster Office Router |
| PMO | Program Management Office |
| PMO | Present Mode of Operation |
| PMO | Policy Management Object |
| PMO | Pasteurized Milk Ordinance (USA Milk Industry) |
| PMO | Premier Oil Plc (stock symbol) |
| PMO | Postmenopausal Osteoporosis |
| PMO | Provost Marshal's Office |
| PMO | Project Management Operations |
| PMO | Program Management Organization |
| PMO | Production Management Office(r) (US DoD) |
| PMO | Performance Management Office |
| PMO | Preventive Medicine Officer |
| PMO | Personnel Management Officer (US DoD) |
| PMO | Palermo, Sicily, Italy - Punta Raisi (Airport Code) |
| PMO | Present Method of Operation |
| PMO | Portfolio Management Officer |
| PMO | Preventive Maintenance Optimization |
| PMO | Program Manager's Office |
| PMO | Private Message Offer (gaming) |
| PMO | Police Motorcycle Officer |
| PMO | Purdue Musical Organization |
| PMO | Priority Material Office (US Navy) |
| PMO | Premium Member Only |
| PMO | Priority Management Objective |
| PMO | Project Management Office/r |
| PMO | Program Management Office/r |
| PMO | Product Managers Office |
| PMO | Palomar Mountain Observatory (also seen as PMOb) |
| PMO | Plant Maintenance Order |
| PMO | Polaris Material Officer |
| PMO | Push Me Out |
| PMO | Precision Marksman/Observer (course) |
| PMO | Planned Maintenance Outage |
| PMO | Paymasters' Office (European Commission, Brussels, Belgium) |