BWI

BWI may refer to:
 * Baltimore/Washington International Airport's IATA code
 * BWI Rail Station, a rail station near the airport
 * ISO 639-3 code for Baniwa language of Içana
 * BirdWatch Ireland, a conservation organisation
 * British West Indies
 * British West Indies Federation's former IOC country code
 * British West Indies dollar (BWI$), a defunct currency
 * Building and Wood Workers' International, a global union federation
 * BWI Center for Industrial Management, a research institute at ETH Zürich
 * Booker Washington Institute, a high school in Kakata, Liberia
 * BWI GmbH, IT services provider to the German military etc.
 * BeijingWest Industries, supplier of brake and suspension systems
 * Bretton Woods Institutions