DLH is a three-letter abbreviation which may refer to:
Abbreviation for pre-war Deutsche Luft Hansa DLH Group, a Danish timber supply company Domestic long-haired cat Duluth International Airport in Duluth, Minnesota (IATA airport code DLH) Former abbreviation of General Directorate of the Infrastructural Investment in Turkey ICAO designator for Lufthansa, a German airline The Email-Domain for employees of Lufthansa. Station code of the Amtrak Thruway station in Duluth, Minnesota
DLH, American data-platform abbreviation which may refer to: deductive lake house