DSU
- DHA Suffa University
- DSU (album)
- Dagestan State University
- Dakota State University
- Dalhousie Student Union
- Danmarks Socialdemokratiske Ungdom
- Dansk Skytte Union
- Data service unit
- Dayananda Sagar University
- DeSales University
- Decorate-sort-undecorate
- Delaware State University
- Delta State University
- Demobilised Soldiers' Union
- Dickinson State University
- Directorate of special units
- Disjoint-set data structure
- Dispute Settlement Understanding
- Distance State University
- Distress signal unit
- Dong Seoul University
- Durham Students' Union
- Dutch Student Union
- Dynamic software updating
- German Social Union (East Germany)
- Utah Tech University