- K ... Kaarta
- Kaas ... Kacha
- Kachari ... Kaffeklubben Island
- Kaffir ... Kahn, Bob
- Kahn, Florence Prag ... Kairov, Ivan Andreyevich
- Kaisariani ... Kala Lagaw Ya
- kala-azar ... Kalhu
- Kali ... Kálnoky von Köröspatak, Gusztav Siegmund, Graf
- Kalo-Ioannes ... Kambari
- Kambes, Wayne ... kamiz
- Kamkwamba, William ... kanak
- Kanak Socialist National Liberation Front ... Kangaroo
- Kangaroo ... Kanō Jigorō
- Kanō Kuninobu ... KANU
- Kanu y Gwynt ... Kaplan, Mordecai Menahem
- Kaplan, Morton ... Karadžić, Radovan
- Karadžić, Vuk Stefanović ... karate
- Karate Kid Part II, The ... Kariya
- Kariye Camii ... Karmatians
- Karmazynowy pemat ... Kartēr
- Karteria ... Kashmir
- Kashmir ... Kasugai
- Kasumigaseki ... Katihar
- Katima Mulilo Rapids ... Kaufman, Andrew Geoffrey
- Kaufman, Andy ... Kawa
- Kawa ... Kayser, Heinrich Gustav Johannes
- Kayseri ... KDP
- KDPG ... Keely, John Ernst Worrell
- Keen, Morris L. ... Keith, James
- Keith, James Francis Edward ... Kellogg, Will Keith
- Kellogg-Briand Pact ... Kemble, George Stephen
- Kemble, Henry Stephen ... Këngët e Milosaos
- Kenilorea, Peter ... Kenney, Mary
- Kennicott, Carol ... Kenya National Archives and Documentation Service
- Kenya National Theatre ... keratosulfate
- Kerbabayev, Berdi ... Kerr, Jean Collins
- Kerr, Robert S. ... Ketmen Range
- keto acid ... Key, Keegan-Michael
- Key, The ... Khaibar Pass
- khair ... Khammam
- Khampti ... Khardung Pass
- khare ... Khazāʾin al-futūḥ
- Khazina, Nadezhda Yakovlevna ... Khmuic languages
- Khmunu ... Khoybun
- khozhdenie v narod ... Khwārezmian language
- Khwārezmian Turkic language ... Kid, The
- Kidal, Candi ... Kigluaik Mountains
- kigyō shūdan ... Killebrew, Harmon Clayton, Jr.
- Killeen ... Kim Shi-Sŭp
- Kim Sisŭp ... Kind of Loving, A
- Kind of Loving, A ... king cake
- King Carl ... King Rother
- king salmon ... King, Mervyn
- King, Mervyn Allister, Baron King of Lothbury ... Kingsley, Charles
- Kingsley, Henry ... Kinsey, Alfred
- Kinsey, Alfred Charles ... Kirgiziya
- kiri mono ... Kırşehir rug
- Kirshehr ... Kiss, The
- Kiss, The ... Kitahara Hakushū
- Kitahara Ryūkichi ... Kiung Chow
- Kiunguja ... Klassiker der exakten Wissen-schaften
- Klau Library ... Kletzki, Paul
- Kleutgen, Joseph ... Klum, Heidi
- Klumpke, Anna ... Knight with the Lion, The
- Knight’s Tale, The ... knockout whist
- Knoevenagel reaction ... Knudsen, Erik
- Knudsen, Hans Christian ... Kobus leche smithemani
- Kobus megaceros ... Kodiak Island
- Kodiak National Wildlife Refuge ... Kohn, Andor
- Kohn, Fritz Nathan ... Kol Nidre
- Kol Nidre, Opus 39 ... Kolombangara, Battle of
- Kolomenskoye ... Kommunistikon Komma Ellados
- Kommunistische Partei Deutschlands ... Kongo
- Kongō ... Konrad Wallenrod
- Konrad Wallenrod and Grazyna ... kopje
- Koplik spot ... Korean language
- Korean lawn grass ... Korsakoff, Sergey Sergeyevich
- Korsakov ... Kosovo Liberation Army
- Kosovo Museum ... Kotroman, Stephen
- Kotromanić dynasty ... Koza, John
- Kozaczyzna ... Kramer, Josef
- Kramer, Larry ... Krebs cycle
- Krebs, Edwin Gerhard ... Krik? Krak!
- Krikalyov, Sergey Konstantinovich ... Krkonoše National Park
- Krleža, Miroslav ... Krueger, Myron
- Krueger, Walter ... KTPI
- ku ... Kuchuk-Stambul
- Kuchum ... Kujbyšev
- kujishi ... Kum Ombu
- Kŭm River ... Kundla
- Kundt’s tube ... Kuo T’ai-ch’i
- Kuo Tzu-i ... Kuril Islands
- Kuril Trench ... kus
- kusa ... kuttāb
- Kuttenberg ... Kwangju Rebellion
- Kwangju Uprising ... kyōgen
- Kyōgyōshinshō ... Kzyl-Orda
