YEI
| Acronym | Definition |
|---|---|
| YEI | Yang Enterprises, Inc. (Oviedo, FL) |
| YEI | Youth Employment Institute (alternative high school; Portland, OR) |
| YEI | Youth Employment Initiative |
| YEI | Yamaha Exporting, Inc. (Buena Park, CA) |
| YEI | Yahalomei Espeka International Ltd. (manufacturer; Israel) |
| YEI | Youth for Energy Independence |
| YEI | Yuasa/Exide, Inc. (now Enersys, Inc.; Reading, PA) |