HNS

HNS may refer to:

• hns, ISO 639-3 code for the Caribbean Hindustani language
• {{#invoke:Lang|lang}} (Croatian Football Federation)
• {{#invoke:Lang|lang}} (Croatian National Alliance) (1998-2004), a political party in the Vojvodina region of Serbia
• {{#invoke:Lang|lang}} (Croatian People's Party – Liberal Democrats), a political party in Croatia
• "Hack 'n' slay", alternate term for the Hack and slash video gaming genre
• HNS, IATA and FAA LID code for Haines Airport in Alaska, United States
• Hexanitrostilbene, an explosive
• HNS Convention, an international agreement on hazardous substances in the sea
• Sikorsky HNS-1, US Navy designation of the Sikorsky R-4 helicopter
• Hughes Network Systems, an American telecommunications company
• Huizhou Nanshan School, a private primary and secondary school in Guangdong, China
• Hyperosmolar nonketotic state, an alternate name for Hyperosmolar hyperglycemic state