- DQO stands for Demanda Química de Oxígeno (Spanish: Chemical Oxygen Demand)
- DQO stands for Data Quality Objective
- DQO stands for Departament de Quimica Orgànica (Catalan: Department of Chemistry)
- DQO stands for Data Quality Office (US Department of Energy)
- DQO stands for Direct Questioning of Objectives (psychology)
Abbreviations And Their Meaning