Ka may refer to:

Typography

• Ka (cyrillic), a letter of the Cyrillic alphabet
• Ka (kana), a Japanese character
• Devanagari ?

Mythology

• A part of the soul in Egyptian mythology
• As a Sanskrit noun:
  • a name of Prajapati
  • a name of Brahman
  • a name of Daksha

Toponyms

• Ka River, a river in Nigeria
• Karnataka, a state of India (ISO 3166-2:IN)

Science

• Ka band, the kurz-above band in the electromagnetic spectrum
• K_a, the acid dissociation constant in chemistry
• Cathode.

People

• Ka (Pharaoh), predynastic pharaoh of Upper Egypt

Brand names and popular culture

• Ford Ka, model of car made by Ford Motor Company
• Kamov, a Russian aircraft design bureau
• KÀ (Cirque du Soleil), a troupe based at the MGM Grand Las Vegas
• Ka (Dark Tower), fate or destiny in Stephen King's Dark Tower series
• Ka, a video game for the Playstation 2 released in North America as Mister Mosquito

KA may mean:

• Kappa Alpha Society
• Kappa Alpha Order, a Greek letter organization in the United States
• (K-A), a former computer game rating later replaced by E for Everyone
• King's Arms public house in Oxford
• post-nominal letters for Knight of the Order of St. Andrew
• Kurt Angle

ka may mean:

• kiloannum, one thousand year.

Either KA or ka may stand for:

• Dragonair (IATA airline designator)
• Karlsruhe, in Germany
• Kilmarnock, in Scotland
• Georgian language (ISO 639 alpha-2 language code), from its autonomic "Kartuli"

kA may mean:

• kiloampere, an SI unit of electric current

cs:KA da:Ka de:KA eo:Ka fr:Ka (homonymie) ko:KA it:KA lv:Ka lt:Ka hu:Ka nl:Ka ja:KA no:KA pl:Ka ksh:KA (Watt ?ßß datt?) sk:Ka fi:Ka sv:Ka (olika betydelser) th:KA