| Acronym | Definition |
|---|
| SEPO➣Student Environmental Protection Organization |
| SEPO➣Software Engineering Process Office (now called Systems Engineering Process Office; SSC San Diego) |
| SEPO➣Systems Engineering Process Office |
| SEPO➣Senior Emergency Planning Officer |
| SEPO➣St. Edmunds Property Owners (est. 1975; Canada) |
| SEPO➣SSI (Solid State Imaging) Education and Public Outreach (Galileo spacecraft mission; US NASA) |
| SEPO➣Support Equipment Project Officer |