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HHW may refer to:

  • hhw (trigraph), used for the Dene Suline language
  • Hallstrom Homeschool Workshops, an American educational co-op
  • Hahndorf Hill Winery, in South Australia
  • Heating hot water, water used for heating
  • Highland Hall Waldorf School, in Northridge, California, United States
  • Hip Hop Weekly (magazine)
  • Household hazardous waste
  • Stan Stamper Municipal Airport, in Hugo, Oklahoma, USA
  • Harmony Hall West, headquarters of the Barbershop Harmony Society