| Acronym | Definition |
|---|
| DSEA | Data Station Emulation Adapter |
| DSEA | Davis Submerged Escape Apparatus (oxygen rebreather) |
| DSEA | Direction des Services de l'Environnement et de l'Assainissement (French: Environment and Sanitation Services Department) |
| DSEA | Dietary Supplement Education Alliance (Sarasota, FL) |
| DSEA | Dipartimento di Sistemi Elettrici e Automazione (Italian: Department of Electrical Systems and Automation; University of Pisa; Pisa, Italy) |
| DSEA | Defense Security Enterprise Architecture (US DoD) |
| DSEA | Delaware State Education Association |
| DSEA | Domestic Security Enhancement Act of 2003 (proposed US legislation) |
| DSEA | Durham Strategic Energy Alliance (Canada) |
| DSEA | Defence Safety and Environment Authority (UK) |
| DSEA | Display Station Emulation Adapter |
| DSEA | Domino Signal Encryption Algorithm |
| DSEA | Disciplinary Society and Education Association (Project Kaleidoscope) |