ABK can refer to:
- Signature of Australian cartoonist Andrew Kelleher
- Another name for rapper Anybody Killa
- IATA airport code for Kabri Dar Airport, Kabri Dar (Kabre Dare), Ethiopia
- The ISO 639-3 code for the Abkhaz language
- Former stock symbol for Ambac Financial Group
- Ahrends, Burton and Koralek architects