BC
BC or B.C. may stand for:
- Boulder City, AZ
- Before Christ, designation applied via its abbreviation "BC" to years prior to the current AD era, (e.g., the year 30 BC)
- British Columbia, a Canadian province
- B.C. (comic), syndicated comic strip by Johnny Hart
- BC wheel, the impossible wheel, a unicycle, named after the comic strip B.C.
- BC (video game), a cancelled computer game by Peter Molyneux
- bc (Unix), "basic calculator" program
- BC class, a steam locomotive classification used by the New Zealand Railways Department
- BC Powder, brand name of pain reliever
- B/C powder, powdered chemicals in a fire extinguisher effective against burning liquids (B-rated) and gases (C-rated)
- Backward compatibility, compatibility of new product with old product
- Baja California, a state of Mexico
- Bala Cynwyd, Pennsylvania
- Ballistic coefficient, a measure of air drag on a projectile, the ratio of its sectional density to its coefficient of form
- Barnard College, a women's liberal arts college, affiliated with Columbia University, in New York, New York
- Bass clef, sometimes abbreviated as B.C. in modern sheet music
- Basso Continuo, an accompaniment used in almost all genres of music in the Baroque period
- Beloit College, a small liberal arts college in Beloit, Wisconsin
- Benedictine College, an institution of higher education in Atchison, Kansas
- Bliss bibliographic classification, a library cataloguing system
- Boise Cascade, a manufacturer of paper and pulp products
- BookCrossing, "releasing books from your shelf into the world"
- Border Crossings, a musical radio show that airs on Voice of America
- Boston College, a university in Chestnut Hill, Massachusetts
- Botswana, World Meteorological Organization and obsolete NATO country code (from the former name "Bechuanaland")
- Buoyancy compensator, a piece of scuba diving equipment
- Burning Crusade, the expansion of the video game World of Warcraft
- Brasseries du Cameroun, a brewery in Cameroon
- Breath control
- Brethren Christian Junior/Senior High School, a Christian High School in Huntington Beach, California
- British Council, a non-departmental public body and registered charity for cultural relations in the United Kingdom
- Brooklyn Cyclones, a minor league professional baseball club
- Brunswick Corporation, stock symbol for a consumer sporting goods manufacturer traded on the New York Stock Exchange
- Skymark Airlines, IATA airline code
- Bayonet cap, a fastening mechanism
- Bill Clinton, the 42nd President of the United States.
- Birth Control, an oral contraceptive