FHB may refer to:
- FHB Mortgage Bank, Hungary's largest mortgage re-financer bank
- Félix Houphouët-Boigny
- First Hawaiian Bank, a bank based in Hawaii that is descended from a bank founded by Charles Reed Bishop.
- Flexor hallucis brevis muscle
- Flowers of Hard Blood
- Failure History Buffer, the error reports of the On Board Software on Spacebus 4000 satellites from Thales Alenia Space)