| Acronym | Definition |
|---|
| DHO | Delta Holding (various locations) |
| DHO | Digital Humanities Observatory (Ireland) |
| DHO | District Health Officer (Pakistan) |
| DHO | District Health Office |
| DHO | Databank Hoger Onderwijs (Dutch: Higher Education Database; Belgium) |
| DHO | Discipline Hearing Officer (Federal Bureau of Prisons) |
| DHO | District Horticulture Officer (India) |
| DHO | District Hearing Officer |
| DHO | Department of Highways Ontario (prior name of Ministry of Transportation Ontario) |
| DHO | Down Hill Only (UK ski club) |
| DHO | Dharma Overground (meditation community) |
| DHO | Diversified Health occupation |
| DHO | Dangerous Hillside Order |
| DHO | Disaster Housing Officer (FEMA) |
| DHO | Day Hospital Oncologico (Italy) |
| DHO | mono-deuterated water (chemical formula) |
| DHO | David Henrie Online (fan website) |
| DHO | Dan Hayes Orchestra (Chicago, IL) |
| DHO | Deck Hatch Opened |
| DHO | Digital Hand-Off (telephony) |
| DHO | Directed Hands-On (training procedure for instructing students) |