FBD may refer to:
Science and technology Flange back distance, in mounting camera lenses Free body diagram, helps visualise forces on bodies Fully Buffered DIMM, computer memory module Function block diagram, a graphical language for programmable logic controller design Functional block diagram, a block diagram in systems engineering
Transport Braine-l'Alleud railway station, in Belgium Flemington Bridge railway station, in England Farrukhabad Junction railway station, in Uttar Pradesh, India Fayzabad Airport, in Afghanistan
Other uses Far Beyond Driven, an album by American metal band Pantera FBD Holdings, an Irish insurance company Freshfields Bruckhaus Deringer, a British law firm