HOO


AcronymDefinition
HOOHeroes of Olympus
HOOHours of Operation (various organizations)
HOOHead of Operations
HOOHood River, Oregon (Amtrak station code)
HOOHrvatski Olimpijski Odbor (Croatian Olympic Committee)
HOOHigh Office of Oversight
HOOHeadquarters Operations Officer (US NRC)
HOOHolding Our Own
HOOHousing Operations Office (various schools)
HOOHome Office Overhead
HOOHanford Operations Office