Other
- HEI, Hawaiian Electric Industries
- HEI, High Explosive Incendiary ammunition
- H.E.I., high energy ignition
- Hei, the main character from Darker than Black
- Human Environment Interaction Five themes of geography
- HEI Hospitality, an American hotel owner and operator
- HEI, High Efficiency Incandescent
- HEI, Hot electron injection
- HEI, Higher Education Institution
- He (letter) - The Hebrew letter
- HEI, Health Effects Institute
- Human Error Identification
- Hei, the typeface
Read more about this topic: HEI