| MPO | Mail Processing Operation 
| Others |
| MPO | Management Planning Organizing
| Others |
| MPO | Manufacturer's Point of Origin
| Others |
| MPO | Master of Prosthetics and Orthotics
| Others |
| MPO | Master Patrol Officer
| Others |
| MPO | Maximum Pressure Oil
| Others |
| MPO | Mechanical Push On
| Others |
| MPO | Medical and Pediatric Oncology (journal)
| Others |
| MPO | Medical Product Outsourcing
| Others |
| MPO | Member Political Organizer
| Others |
| MPO | Mercury Planetary Orbiter
| Others |
| MPO | Metadata Provenance Ontology
| Others |
| MPO | Metro Planning Organization
| Others |
| MPO | Metropolitan Planning
| Others |
| MPO | Metropolitan Planning Organization
| Others |
| MPO | Metropolitan Planning Organizations
| Others |
| MPO | Military Protective Order
| Others |
| MPO | Milton P Oliver
| Others |
| MPO | Minor Planet Observer
| Others |
| MPO | Miscellaneous Parts Order
| Others |
| MPO | Mobile Post Office
| Others |
| MPO | Modulation Parlour Orchestra
| Others |
| MPO | Motion Picture Operator
| Others |
| MPO | Motor Patrol Officer
| Others |
| MPO | Mt. Pocono, Pennsylvania USA
| Others |
| MPO | Multi Parallel Output
| Others |
| MPO | Multi Picture Object
| Others |
| MPO | Multi Push On
| Others |
| MPO | Multi-Purpose Outdoors
| Others |
| MPO | Multifiber Push On
| Others |
| MPO | Multipath Push On
| Others |
| MPO | Multiple Picture Object
| Others |
| MPO | Muscle Protein Optimizer
| Others |
| MPO | Music Performance Output
| Others |
| MPO | Music Power Output
| Others |
| MPO | My Personal Opinion
| Others |
| MPO | The Maaysian Philharmonic Orchestra
| Others |