| Acronym | Definition |
|---|
| E&I➣Electrical and Instrumentation (engineering) |
| E&I➣Engineering and Integration |
| E&I➣Entrepreneurship and Innovation (various schools) |
| E&I➣Engineering & Installation (US DoD) |
| E&I➣Environment & Infrastructure |
| E&I➣Erase and Install (software troubleshooting) |
| E&I➣Evaluation & Improvement |
| E&I➣Examination and Inventory (aircraft maintenance) |
| E&I➣Economic and Interstate Importance (roads) |
| E&I➣Enforcement and Intelligence Group (UK) |