- DIQ stands for Director in Qualification (Mary Kay Cosmetics)
- DIQ stands for Deutsches Institut für Qualitätsförderung (German: German Institute for Quality Improvement)
- DIQ stands for Design Information Questionnaire (building inspections)
- DIQ stands for Descriptive Information Questionnaire
- DIQ stands for Drunk In Quarters
- DIQ stands for Design Inventory Questionnaire
- DIQ stands for Direction of Interest Questionnaire (psychiatry)
DIQ