| Acronym | Definition |
|---|
| EIEIO | Enhanced Integration of Emacs Interpreted Objects |
| EIEIO | Email, Internet, Electronic Information Officer (South Park cartoon) |
| EIEIO | Enforce In-Order Execution of Input/Output (PPC assembly) |
| EIEIO | Electron Impact Excitation of Ions from Organics |
| EIEIO | Economic Incentives for Enterprises in Indiana and Ohio |
| EIEIO | Excellence in Everything I Offer |
| EIEIO | Excellence in Education Input/Output |
| EIEIO | Environmentally Integrated Effects Initiatives for Operations |
| EIEIO | East Isn't Even It's Odd |
| EIEIO | Engineering Instruction/Engineering Implementation Order |
| EIEIO | Ecstatic, Improvisational, Ensemble, Inspired, Organic |
| EIEIO | Elite Idealistic Earth Individuals Organization (May the Farce Be with You) |