| Acronym | Definition |
|---|
| SEDI | Executive Secretariat for Integral Development |
| SEDI | Scientific Equipement Developement Institute (Enugu, Nigeria) |
| SEDI | System for Electronic Disclosure by Insiders |
| SEDI | Social and Enterprise Development Innovations |
| SEDI | Study of the Earth's Deep Interior |
| SEDI | Système Électronique de Déclaration des Initiés (French: System for electronic disclosure by insiders) |
| SEDI | Social Enterprise Development Initiative |
| SEDI | Systems Engineering and Development Institute (US DHS) |
| SEDI | Sumitomo Electric Device Innovation (Japan) |
| SEDI | Service d'échange de documents informatisés (Quebec, Canada) |
| SEDI | Secure Electronic Data Interchange |