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Look up PHN in Wiktionary, the free dictionary.
PHN is an acronym used for postherpetic neuralgia, a neuropathic pain.
PHN may also refer to:
- North Philadelphia station (Amtrak station code)
- Spanish National Water Plan (Plan Hidrológico Nacional); see Water supply and sanitation in Spain
- Phoenician language (ISO 639-2 and ISO 639-3 codes)
- p-Hydroxynorephedrine, an analog of norephedrine
- St. Clair County International Airport (IATA and FAA LID codes)
- Public Health Nurse