HW stands for:

  • Citroën Type H, model name
  • Polish license plate for border protection
  • Hardware, a general term for mechanical and electronic equipment of a system, such as a computer system
  • Hello ( airline), a former Swiss airline ( IATA code )
  • Flood
  • Northing or height value
  • Hot Wheels Model Cars by Mattel
  • Tungsten carbide, abbreviation according to ISO 513

HW as distinguishing signs on license plate:

  • Germany: Kreis Halle ( discontinued)
  • UK: Isle of Wight
  • Disambiguation
  • Abbreviation