CBJ may refer to:

• CBJ-FM, a French-language Canadian radio station

• cbj (publisher), a German publisher

• Cheek by Jowl, a UK theatre company

• Brazilian Judo Confederation, or Confederação Brasileira de Judô

• Central Bank of Jordan, the central bank of Jordan

• Christian Bookstore Journal, a trade magazine

• Clive Barker's Jericho, a supernatural horror-themed first person shooter video game

• Columbus Blue Jackets, a professional ice hockey team based in Columbus, Ohio

• City and Borough of Juneau (CBJ), the unified municipality of Juneau, Alaska located on the Gastineau Channel

• Cabo Rojo Airport (IATA code: CBJ), Caribbean coastal airport in the Dominican Republic

• Country Bear Jamboree, an attraction at the Magic Kingdom in the Walt Disney World Resort and at Tokyo Disneyland

• Cyclone Business Jet, an undergraduate student organization designing and constructing a prototype 10-passenger airplane

• Saab Bofors Dynamics CBJ-MS, a Swedish PDW/submachine gun

• 6.5×25mm CBJ, a firearms cartridge that can be used in the Saab Bofors Dynamics CBJ-MS