| Precision Manufacturing Insurance Services | Business |
| Premis Corporation | Business |
| Performance Management Incentive System | Business |
| Pmispersonnel Management Information System | Business |
| Program Management Information System | Business |
| Personnel Management Information System | Business |
| Property Management Information System | Business |
| Project Management Information System | Business |
| Pastoral Management Information System | Business |
| Practice Management And Information System | Business |
| Programme Management Information System | Business |
| Port Management Information Systems | Business |
| Project Management Information Systems | Business |
| Procurement Management Information System | Business |
| Performance Management Information System | Business |
| Pavement Management Information Systems | Business |
| Public Management and Information System | Business |
| Port Moresby International School | Community |
| Plant Manufacturing Information System | General |
| Plant Management Information System | General |
| Parallel Maximal Indepent Set | General |
| Picture Memory Impairment Screen | General |
| Project Mgt Intelligence and Security | General |
| Project Mgmt Information System | General |
| Plant Maintenance Information System | General |
| Psychological Operations (PSYOP) Management Information Subsystem | Governmental |
| Please Make It Stop | Internet |
| Pediatric Multisystem Inflammatory Syndrome | Medical |
| Pædiatric Multisystem Inflammatory Syndrome | Medical |
| Professional Medical Insurance Services | Medical |
