Ka or KA may refer to:

Arts and entertainment

  • K.A. (Kohntarkosz Anteria), a 2004 album by Magma
  • KA (film), a 2024 Indian Telugu-language crime thriller film directed by the duo Sujith and Sandeep
  • Kà, a Cirque du Soleil show
  • Ka (Dark Tower), a plot element in Stephen King's Dark Tower series
  • Mister Mosquito, a 2001 video game, known in Japan as Ka

Businesses and organizations

  • Kappa Alpha Order, a fraternity founded in 1865 at Washington and Lee
  • Kappa Alpha Society, a fraternity founded in 1825 at Union College
  • Karenni Army, a Burmese guerilla organization
  • Knattspyrnufélag Akureyrar, an Icelandic football club
  • Kuklos Adelphon, an 1800s-era Southern fraternity
  • Khan Academy, a non-profit educational organization
  • King's Arms, Oxford, a pub known as the KA

Language

Languages

  • Ka, a variety of the Central Banda language
  • Georgian language, by ISO 639-1 code

Characters

  • Ka (Cyrillic), a letter in the Cyrillic script
  • Ka (Indic), a group of related glyphs from the Brahmic family of scripts
  • Devanagari ka, a letter in the Devanagari script
  • Ka (Javanese) (ꦏ), a letter in the Javanese script
  • Ka (kana), a syllabic grapheme in the Japanese katakana and hiragana scripts

People

  • Ka (pharaoh) (fl. c. thirty-second century B.C.), Predynastic pharaoh of Upper Egypt
  • Ka (rapper) (1972–2024), performer

Places

  • Ka Farm, Østre Toten, Norway; see List of short place names
  • Ka Island (Ka-to), North Korea
  • Ka Lae, Hawaii, southernmost point in the fifty United States
  • KA postcode area, Scotland
  • Ka River, Nigeria
  • Karlsruhe, Germany (e.g. code used on German vehicle registration plates)
  • Karnataka, India

Science and technology

  • K<sub>a</sub>, an acid dissociation constant
  • K<sub>a</sub> band, a microwave band
  • K<sub>a</sub>, the absorption rate constant of a drug
  • K<sub>a</sub>, number of non-synonymous substitutions at a DNA site, used in K<sub>a</sub>/K<sub>s</sub> ratio
  • Ka tree, Terminalia carolinensis
  • kiloannum or kiloannus (ka), a unit of time equal to one thousand (10<sup>3</sup>) years
  • Keepalive, a computer network message
  • Kiloampere (kA), a unit of electric current

Transport

  • Ford Ka, a car
  • NZR K<sup>A</sup> class, a New Zealand steam locomotive
  • KA, IATA code of Aero Nomad Airlines, a Kyrgyz airline
  • KA, then IATA code of Cathay Dragon, formerly Dragonair
  • Kenya Airways
  • Code for products of Kamov, a Russian rotorcraft manufacturing company

Other uses

  • Ka (Bengali), a consonant character
  • Ka (cuneiform)
  • Ka or kꜣ, "double" or "vital essence", an Ancient Egyptian concept of the soul or spirit
  • Knight or Dame of St Andrew, a Barbadian award
  • Kingda Ka, a former roller coaster at Six Flags Great Adventure
  • KA, a carbonated drink produced by the company A.G. Barr