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. ), Quebec's police watchdog Indonesia Stock Exchange or Bursa Efek Indonesia
See also
Bei (disambiguation) Bel (disambiguation) Be-1 (disambiguation) including BE1 and Be1