KK
- kk – (s) Kazakh language (ISO 639-1 code)
- kK – (s) Kilokelvin
- KK – (i) Kabushiki kaisha (Japanese for "Stock Company", found in the legal names of countless Japanese corporations) – Košarkarski klub (Slovenian), Košarkaški Klub (Croatian and Serbian in Latin script), Кошаркашки клуб (Serbian Cyrillic), Krepšinio Klubas (Lithuanian); all mean "Basketball Club", as in KK Union Olimpija, KK Cibona, KK Partizan, and KK Atletas
- KKK – (i) Ku Klux Klan
Read more about this topic: List Of Acronyms And Initialisms: K