1. BF is short for boy friend, see the BF & GF definition for further information.
2. BF is also an acronym for the computer EA game Battlefield, a first person shooter war game that pits you against other players online or over a network. This acronym also describes the BF version, e.g. BF1942 (Battlefield 1942), BF2 (Battlefield 2), BF2142 (Battlefield 2142), BF3 (Battlefield 3), and BF4 (Battlefield 4).