HLO

AcronymDefinition
HLOHello
HLOHigh Level Orchestrator
HLOHelicopter Landing Officer (offshore oil and gas industry)
HLOHigh Level Outcome (various organizations)
HLOHigh Lunar Orbit
HLOHelicobacter-Like Organism
HLOHot-line Operator
HLOHispanic Latino Outreach (Brady Center to Prevent Gun Violence; Los Angeles-based program)