GTN

GTN may refer to:


 * Gas Transmission Northwest
 * Gdańsk Scientific Society (Polish: Gdańskie Towarzystwo Naukowe)
 * Gestational trophoblastic neoplasia
 * Glentanner Aerodrome, in New Zealand
 * Global Traffic Network, a traffic reporting service
 * Global Trance Network, a German record label
 * Glyceryl trinitrate
 * Grangetown railway station, in Wales
 * Gray Television, an American broadcaster
 * Greater Talent Network, an American speakers bureau
 * Guardian Television Network, in Columbus, Ohio
 * Global Television Network