BCD may refer to:
- Barrels per calendar day, a unit for measuring output of oil refineries
- Basnahira Cricket Dundee, a Sri Lankan cricket team
- Beirut Central District, the financial and economic hub of Beirut city
- Berkshire Country Day School, an independent school in Lenox, Massachusetts, USA
- Birth control device, contraceptive
- Board-certified diplomate, a professional credential
- bolt circle diameter
- Buoyancy Compensator Device, used in Scuba diving
- Blue compact dwarf galaxy, a small galaxy which contains large clusters of young, hot, massive stars
- Bacolod-Silay International Airport (IATA: BCD), in Silay City, Philippines
- Charleston-Dorchester Metropolitan Area, part of the Charleston-North Charleston-Summerville metropolitan area
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