Bie or BIE may refer to:
- Bureau of International Expositions, an international body that organizes international expositions (also known as expos or world's fairs)
- Beijing Institute of Education, a university in China
- Bié (province) in Angola
- Bie, Ferdinand, co-champion of the pentathlon at the 1912 Summer Olympics in Stockholm.
- Bié Plateau, a highland region in Angola
- Bie, Sweden, a village in Södermanland County, Sweden
- Saint Bienheuré (Saint Bié)