| Acronym | Definition |
|---|
| PHN | Phone |
| PHN | Plan Hidrológico Nacional (Spain) |
| PHN | Post-Herpetic Neuralgia (complication from a shingles infection) |
| PHN | Public Health Nurse |
| PHN | Public Health Nutrition (various schools) |
| PHN | North Philadelphia (Amtrak station code; Philadelphia, PA) |
| PHN | Phone List |
| PHN | Personal Health Number (Canada) |
| PHN | Public Health Network |
| PHN | Port Huron, Michigan (Airport Code) |
| PHN | Public Health Notification (US FDA) |
| PHN | Phase Noise |
| PHN | Passive Heymann Nephritis |
| PHN | Parc Historique National (French: National Historic Park; Canada) |
| PHN | Population, Health, & Nutrition |