Bob is a shortened version of the name Robert. In this role it is sometimes used to refer to J. R. "Bob" Dobbs, figurehead of the Church of the SubGenius.

It can also refer to the following:

• Bob cut, a type of hair style
• Bob, a fictional character used in explanations

BOB can also serve as a three letter abbreviation for the following:

• Baby on board, an automobile sign fad that was popular during the 1980s.
• Band of brothers, TV-series
• Bank of Beirut
• Bank of Bermuda
• Best of breed , commonly used in reference to the computer industry or with dogs.