HIWG

AcronymDefinition
HIWGHumanitarian Issues Working Group (UN High Commissioner for Refugees; Geneva, Switzerland)
HIWGHistory of the Imperium Working Group (Traveller roleplaying game fan group)
HIWGHolocene Impact Working Group (climate change)
HIWGHealth Insurance Working Group
HIWGHawaii Wing (Civil Air Patrol)
HIWGHonouring Indigenous War Graves, Inc. (Australia)