BOB may stand for:

• Back of the book (philately)
• Back of the book (publishing)
• Band of Brothers
• Bank of Baroda
• Bank of Beirut
• Bank of Butterfield
• Bank One Ballpark (referred to as "The BOB")
• Rice University's Basketball Owl Band
• Battery operated boyfriend
• Battle of Britain
• Beast of Burden
• Berner Oberland Bahn, a mountain railway in Switzerland.
• Best of breed
• Big Orange Ball, slang for the sun
• Blitter object
• Boliviano (Bolivian currency)
• Bombs Over Baghdad
• Bug out bag
• Bunch of Believers, a Christian Ska group
• Born On Board, a reference to a certain type of NPC characters from the computer game Marathon.

See also

• Bob cut, a haircut
• Microsoft Bob
• J. R. "Bob" Dobbs, figurehead of the Church of the SubGenius