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Look up bei in Wiktionary, the free dictionary.
BEI or B.E.I. may refer to :
- Binary ethylenimine, an inactivant used in the inactivation of the foot-and-mouth disease virus
- Business Entity Identifier, an ISO 9362 Bank Identifier Code (BIC) assigned to a non-financial entity
- Balanced Ecology, Inc.
- Bureau des enquêtes indépendantes ), Quebec's police watchdog
- Indonesia Stock Exchange or Bursa Efek Indonesia