Ka

Ka or KA may refer to:

Arts and entertainment

 * K.A. (Kohntarkosz Anteria), a 2004 album by Magma
 * 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

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) (born 1972), performer

Places

 * Ka Farm, Østre Toten, Norway; see List of short place names
 * Ka Island (Ka-to), North Korea
 * KA postcode area, Scotland
 * Ka River, Nigeria
 * Karlsruhe, Germany (e.g. code used on German vehicle registration plates)
 * Karnataka, India

Science and technology

 * Ka, an acid dissociation constant
 * Ka band, a microwave band
 * Ka, the absorption rate constant of a drug
 * Ka, number of non-synonymous substitutions at a DNA site, used in Ka/Ks ratio
 * Ka tree, Terminalia carolinensis
 * kiloannum or kiloannus (ka), a unit of time equal to one thousand (103) years
 * Keepalive, a computer network message
 * Kiloampere (kA), a unit of electric current

Transport

 * Ford Ka, a car
 * NZR KA 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 roller coaster at Six Flags Great Adventure
 * KA, a carbonated drink produced by the company A.G. Barr
 * "Ka" (song), a song composed by LeaF for Taiko no Tatsujin