- DUG stands for Digital Underground
- DUG stands for Denver Urban Gardens (est. 1985; Denver, CO)
- DUG stands for Datatel Users’ Group
- DUG stands for Diplôme d’Université de Gemmologie (French: University Diploma of Gemology)
- DUG stands for Delphi Users Group (client/server development)
- DUG stands for Day Undergraduate (Chaminade University; Hawaii)
- DUG stands for Desktop User Guide (computer guide)
- DUG stands for Diagonal Unitary Group
DUG