KK
- 2K (disambiguation)
- 2nd II None
- AtlasGlobal
- J/Z (New York City Subway service)
- Jeep Liberty (KK)
- Jesperi Kotkaniemi
- K (disambiguation)
- K. K. Downing
- K. Keshava Rao
- K.K. Slider
- K2 (disambiguation)
- KK (composer, producer)
- KK (musician)
- KK (singer)
- KK (song)
- KK Goswami
- KK Mladost (disambiguation)
- KK Super Mart
- KK thesis
- KK-theory
- KKAY
- KKK (disambiguation)
- KKKK (disambiguation)
- KKKKK (disambiguation)
- Kabushiki gaisha
- Kaluza–Klein theory
- Karachi Kings
- Kay Kay Menon
- Kay Kay and His Weathered Underground
- Kazakh language
- Keikyu
- Keke Rosberg
- Kemal Kılıçdaroğlu
- Kenneth Kaunda
- Kenyon and Knott
- Kernewek Kemmyn
- Kilokelvin
- Kinnickinnic River (Milwaukee River)
- Kk (digraph)
- Kota Kinabalu
- Kritika Kultura
- Krusty Krab
- Krystyna Kobylańska
- Kuala Kangsar
- Kuala Klawang
- Kuala Kurau
- Kvinner og Klær
- Kwang-hyun Kim
- List of Homestuck characters
- Northern Cyprus
- OK
- Ralph Kirkpatrick
- The Faceless Ones