SHN

SHN, or Shn, may refer to:


 * School health and nutrition services
 * Servicio de Hidrografia Naval, the Argentine Naval Hydrographic Service
 * SHN (theatres), a theatrical production company, now known as BroadwaySF, in San Francisco, US
 * SHN, the file name extension for the Shorten file format
 * SHN, the IATA code for Sanderson Field in the state of Washington, US
 * SHN, the ISO 3166-1 alpha-3 code for Saint Helena, Ascension and Tristan da Cunha
 * shn, the ISO 639-3 code for the Shan language spoken in Shan State, Myanmar
 * SHN, the National Rail code for Shanklin railway station on the Isle of Wight, UK