KAJA may refer to:

  • KAJA (FM), a radio station (97.3 FM) licensed to San Antonio, Texas, United States
  • K68DJ, a television station (channel 68) licensed to Corpus Christi, Texas, United States, unofficially known as KAJA
  • Kajagoogoo, a British pop band known as Kaja for a brief period of time.
  • Kaja (singer), a Montenegrin singer and songwriter
  • Kaja Foglio, a fantasy and comic book artist, who has done several pieces for Magic: the Gathering