| Acronym | Definition |
|---|
| QEI➣Quadrature Encoder Interface |
| QEI➣Queen Elizabeth Islands |
| QEI➣Quality Enhancement Initiative |
| QEI➣Quod Erat Inveniendum (Latin: Which Was to Be Found Out) |
| QEI➣Qualified Elevator Inspector (NAESA) |
| QEI➣Quality Educator Interactive (online planning tool) |
| QEI➣Quincy Engineering, Inc. (California and Oregon) |