Ka
- A.G. Barr
- Aero Nomad Airlines
- Ancient Egyptian conception of the soul
- Cathay Dragon
- Central Banda language
- Devanagari ka
- Ford Ka
- Georgian language
- K.A (Köhntarkösz Anteria)
- KA (film)
- KA postcode area
- Ka (Bengali)
- Ka (Cyrillic)
- Ka (Dark Tower)
- Ka (Indic)
- Ka (Javanese)
- Ka (cuneiform)
- Ka (kana)
- Ka (pharaoh)
- Ka (rapper)
- Ka Island
- Ka Lae
- Ka River
- Ka band
- Ka/Ks ratio
- Kamov
- Kappa Alpha Order
- Kappa Alpha Society
- Karenni Army
- Karlsruhe
- Karnataka
- Keepalive
- Kenya Airways
- Khan Academy
- Kiloampere
- King's Arms, Oxford
- Kingda Ka
- Knattspyrnufélag Akureyrar
- Knight or Dame of St Andrew
- Kuklos Adelphon
- Kà
- List of short place names
- Mister Mosquito
- NZR KA class
- Terminalia carolinensis