- K ... Kaarta
- Kaas ... Kacha
- Kachari ... Kaffeklubben Island
- Kaffir ... Kahn, Bob
- Kahn, Florence Prag ... kaiseki
- Kaiser Foundation Health Plan ... Kalaaleq language
- Kalaallit Nunaat ... Kāli Gandak River Valley
- Kali River ... Kalogeropoulos, Maria Cecilia Sophia Anna
- Kalojan ... Kāmboja
- Kambot ... Kamm, Oliver
- kamma ... Kanaloa
- Kanaloa ... Kangaroo Island
- Kangaroo Island emu ... Kanō Morinobu
- Kanō Motonobu ... kanun
- Kanuni ... Kapoeas Rivier
- kapok ... Karaganda
- Karaganda ... Karate Kid, The
- Karatepe ... kārīz
- Karjakin, Sergey ... Karmiʾel
- Karmuna ... Kartini, Raden Adjeng, Lady
- Kartinki s vystavki ... Kashmir, Lion of
- Kashmir, University of ... kata thermometer
- Kata Tjuta ... Katmai National Monument
- Katmai National Park and Preserve ... Kaufman, Ida
- Kaufman, Irving Robert ... Kawaguchi
- Kawaguchi, Lake ... Kazacharthra
- Kazachskij Melkosopočnik ... keaki
- Kean College ... Keene, Henry
- Keene, Laura ... keitou
- Keiyō Industrial Zone ... Kelly, Edward
- Kelly, Edward J. ... Kemény, Zsigmond, Baron
- Kemerovo ... Kennebec River
- Kennebec: Cradle of Americans ... Kenosha
- kenotron ... Kenyatta, Jomo
- Kenyatta, Uhuru ... keremet
- Kerensky Offensive ... Kerry
- Kerry blue terrier ... Ketpen Range
- Kett, Robert ... Keyes, Geoffrey
- Keyes, Roger John Brownlow Keyes, 1st Baron ... Khalaf al-Aḥmar
- Khalaf, Ṣalāḥ ... Khan Sahib
- Khan Tängiri Peak ... kharjahs
- Kharjuravahaka ... Khentei Mountains
- Khenti-Imentiu ... Khōī
- Khoi languages ... Khrushchev, Nikita
- Khrushchev, Nikita Sergeyevich ... Kiamichi River
- KiAmu ... Kidjo, Angélique
- Kidman, Nicole ... Kikongo ya Leta
- Kikongo-Kituba ... Killer, The
- Killers ... Kimbangu, Simon
- Kimbanguism ... Kindertotenlieder
- Kindertransport ... King George IV Bridge
- King George Sound ... King’s College at York, University of
- King’s Collegiate School ... King-Byng Affair
- King-Crane Commission ... Kinh Duong
- Kinhwa ... kiosk
- kiosk ... Kirk, Alan Goodrich
- Kirk, Andy ... Kisangani
- Kisarazu ... Kit-Cat Club
- Kita ... kitchen garden pusley
- Kitchen Garden school ... Kizhi Island
- Kızıl Adalar ... Kleene, Stephen Cole
- Kleiber’s law ... Klinghoffer, Josh
- klinokinesis ... Knausgård, Karl Ove
- Knauss, Melania ... Knight, Thomas Andrew
- Knight, Widow ... Knott, Walter
- knotted coiling ... Ko-chiu
- ko-en-gen ... Koch, Ed
- Koch, Edward Irving ... Kófinos Mountains
- Köflach ... Kojinteki-na taiken
- Kojo no tsuki ... Kolekole Pass
- Koleluttu ... Kolymskoye Upland
- Kolzig, Olaf ... Kon Tum
- Kon-Tiki ... Königsberg
- Königsberg bridge problem ... Konwicki, Tadeusz
- Kony 2012 ... Koraïs, Adamántios
- Koran ... Korínthou Canal
- Korínthou, Isthmós ... Kościół Mariacki
- Kosciuscola tristis ... Kostov, Traicho
- Kostrikov, Sergey Mironovich ... Koumbi Saleh
- koumiss ... Krâchéh
- Kracholov, Peyo ... Krasnitsky, Vladimir
- Krasnoarmeysk ... Kremsier constitution
- kremt ... Krishnamurti, Jiddu
- Krishnanagar ... Kromo
- kromogram ... Krusen, Dave
- Krusenstern, Adam Johann ... Kuang-tung
- Kuang-wu-ti ... Kūfah, Al-
- kuffār ... Kulaly
- kulan ... Kümbet Camii
- Kumbh Mela ... Kungurian Stage
- kuni ... Kurath, Hans
- Kurathi ... Kurrachee
- kurrağ ... Kusinska, Beata Maria
- Kusiyara ... Kuybyshev
- Kuybyshevka-Vostochnaya ... Kworra
- Kwoth ... Kyrgyz literature
- Kyrgyz Republic ... Kzyl-Orda