Other
- Wei (rank), a company-grade officer in Chinese armed forces.
- Wei, a star otherwise known as Epsilon Scorpii
- "Wei Empire" - a fictional state and planetary romance of Yulia Latynina, consisting of 5 novels and 2 short stories
The acronym WEI may also refer to:
- Wau Ecology Institute
- The Windows Experience Index reported by the Windows System Assessment Tool, a measure of the user-perceived performance of a computer running Microsoft Windows.
Read more about this topic: Wei