BHK is a three-letter abbreviation that may refer to:
- BHK interpretation of intuitionistic predicate logic
- Baby hamster kidney cells used in molecular biology
- Bachelor of Human Kinetics (BHk) degree.
- Biblia Hebraica (Kittel), by Rudolf Kittel
- British Hong Kong, former British colony
- Bush Hill Park railway station, London, UK, National Rail station code
- Bukhara International Airport, Uzbekistan, IATA code