The THW is the Technisches Hilfswerk, a German federal agency for emergency management.
THW or Thw may also refer to:
Science and technology George Henry Kendrick Thwaites (1812-1882), English botanist and entomologist (botanical abbreviation: Thw.) Transient hot wire method, to measure thermal conductivity Trinity High Water, a defunct vertical datum on the River Thames, London
Transport The Hawthorns station, a rail and tram station near Birmingham, England (GBR code: THW) Trincomalee Harbour Waterdrome, Sri Lanka (IATA code: THW)
Other uses The Hillbilly Way, an American country music band THW Kiel, a German handball team