FBD may refer to: Science and technology Flange back distance Free body diagram Fully Buffered DIMM 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