HN

HN may refer to:

• Hacker News, a popular tech news site
• Hanoi, Vietnam
• Hawk Nelson, a Christian punk band
• Heavylift Cargo Airlines' IATA airline designator
• Heilbronn, a city in Germany
• HN, an abbreviation for Hell No!, a negative exclamation shouted when a less than pleasing event occurs
• Herceg Novi, a town in Montenegro
• Honduras, country code ISO 3166-1 alpha-2
• Hn., an abbreviation for Horn (instrument) in musical scores
• HN, the abbreviation for Hospitalman, a United States Navy Hospital Corpsman rate
• Hutchinson and Northern Railway
• Hyperdimension Neptunia, a game
• Hn., or Hanım, a Turkish word for Mrs.
• HN, a numbering system for Royal Doulton Figurines named after employee Harry Nixon
• Hardware Node, Virtual Ethernet device concept
• .hn, Internet country code top-level domain (ccTLD) for Honduras
• ⟨hn⟩, a two-letter combination used in some languages
  • Reduction of /hn/ to /n/ in Old/Middle English

Vehicle registration plate code

• Heilbronn, Germany
• Thesprotia (Igoumenitsa), Greece
• Herceg Novi, Montenegro