- Source: KKJ (disambiguation)
KKJ may refer to:
Kamikaze Kaitō Jannu or Phantom Thief Jeanne, a magical girl shōjo manga series
Kitakyushu Airport, the IATA code KKJ
Kokura Airport, the former IATA code KKJ
Bantu language, the ISO 639-3 code KKJ
Kylie Jenner, whose initials are KKJ