| Partnership for Nuclear Security | Academic & Science |
| Peripheral Nerve Society | Academic & Science |
| Pulsed Neutron Source | Academic & Science |
| Perpetual Named Scholarship | Academic & Science |
| Panther Secs. | Business |
| Pinnacle Data Systems | Business |
| Plate aNd Steel | Business |
| Public News Service | Community |
| Pakistan News Service | Community |
| Pacific News Service | Community |
| Perry Nursery School | Community |
| Paul's New Song | Community |
| Primary Name Server | Computing |
| Private Name Server | Computing |
| Private Network Services | Computing |
| Pacific Northwest Section | General |
| Platform Notification Services | General |
| Push Notification Services | General |
| Pain Nerve Stimulation | General |
| Polytrauma Network Site | General |
| Poly Nervous System | General |
| Portable Navigation System | General |
| Porsche North Scottsdale | General |
| Presbyterian Night Shelter | General |
| Pacific Northwest Snowfighters | General |
| Perfect North Slopes | General |
| PPTP Network Server | General |
| Pheriphical Nervous System | General |
| Prefer Not to Say | General |
| Pissing Network System | General |
| Perspective in Namek Saga | General |
| Periferal Nervous System | General |
| Paraneoplastic neurologic syndrome | General |
| Noodle Shops | General |
| Pipeline Nitrogen Services | General |
| Parabolized Navier Stokes | General |
| Projects of National Significance | General |
| Pacific Neuropsychiatric Specialists | General |
| Professional Network Services | General |
| Peripherial Nervous System | General |
| Payment Network Services | General |
| Pegawai Negri Sipil | General |
| Principles of Networked Systems | General |
| Peripheral Nerve Stimulation | General |
| Parenteral Nutrition Solution | General |
| Power Not Supplied | General |
| Peripheal Nervous System | General |
| Passive Network Sensor | General |
| Professional Nutrition Services | General |
| Patient Notification System | General |
| Pas Normal Studios | General |
| Point N Shoot | General |
| Pin Number Syndrome | General |
| Premarket Notification Section | Governmental |
| Portsmouth Naval Shipyard | Governmental |
| Pakistani Naval Ship | Governmental |
| Pakistan Navy Ship | Governmental |
| Pakistan Navy S | Governmental |
| PILLAMSHAT | Indian Railway Station |
| Pediatric Nurses Station | Medical |
| Paraneoplastic Neurological Syndromes | Medical |
| Physician Network Services | Medical |
| Pennsylvania Neurological Society | Medical |
| Philadelphia Neuropsychology Society | Medical |
| Para Nasal Sinuses | Medical |
| Pharmacy Network Services | Medical |
| Paraneoplastic Neurologic Syndromes | Medical |
| Peripheral Nervous System | Medical |
| Penile Numbness Syndrome | Medical |
| Pediatric Neuro- Surgery | Medical |
| Percutaneous Neural Stimulator | Medical |
| Pakistan Naval Services | Military and Defence |
| Pensacola Regional Airport, Pensacola, Florida USA | Regional |
| Philadelphia and Norfolk Steamship | Regional |
| Pegawai Negeri Sipil | Softwares |
| Pacific Northwest Swimming | Sports |