English abbreviations from k to ka
- k (Kilo-)
- K. (Kalendas ("Calends"); or Care, Carus, Cara ("Dear One"); or Carissimus[a] ("Dearest"))
- K/DOQI (Kidney Disease Outcomes Quality Initiative)
- K/Pg (Cretaceous/Paleogene Boundary)
- K&R (Kernighan and Ritchie)
- K/T (Cretaceous/Tertiary Boundary)
- K-12 (Kindergarten-Twelfth Grade)
- K12 (Kindergarten through 12th Grade)
- K2B (Keswick to Barrow Walk)
- K-5 (Kindergarten-Fifth Grade)
- K6 (microprocessor by AMD (1997))
- K7 (Cassette)
- K9 (Canine Police Unit)
- ka (Georgian language (ISO 639-1 code))
