• Ka (pharaoh) (fl. c. 31st century BCE), Egyptian ruler

• Ka River, in Nigeria

• Titled expressive works:

• * KÀ (Cirque du Soleil), stage show

• * Ka, video game a.k.a. Mister Mosquito

• Writing-system characters:

• * Ka (Cyrillic), letter

• * Ka (kana), a Japanese character

• * Devanagari glyph क

• Philosophy

• * Ka, life-force component of soul in ancient Egyptian religion

• * Ka (Dark Tower), destiny concept in the series of novels

• Ford Ka, auto model

Abbreviations

• College fraternities:

• * KA, Kappa Alpha Society

• * KA, Kappa Alpha Order

• * KA, Kuklos Adelphon

• KA, King's Arms public house in Oxford

• KA, Dragonair airline

• KA, Karlsruhe, Germany

• KA postcode area in Scotland

• Ka band, classification of some electromagnetic radiation

• K_a, acid dissociation constant

• kA, kiloampere, electrical unit of measurement

• ka, kiloannum, one thousand years

• ka, Georgian language