| k band ... Kadet |
| Kadima ... Kainan |
| kainite ... Kaledin, Aleksey Maksimovich |
| Kaleida Labs, Inc. ... Kamalpur Valley |
| kamanja ... kanaga |
| Kanaga Island ... Kankrin monetary reform |
| Kankrin, Egor Frantsevich, Count ... Kaplan, Justin |
| Kaplan, Metin ... Karankawa |
| Karaosmanoglu, Yakup Kadri ... karnoffel |
| Karnten ... Kassak, Lajos |
| Kassala ... Katz, Janina |
| Katz, Jerrold J. ... Kaysone Phomvihan |
| Kazaa ... keep |
| Keeshan, Bob ... Kelly, Michael |
| Kelly, Molly ... Kennedy, Graham Cyril |
| Kennedy, James ... Kepler's first law of planetary motion |
| Kepler's laws of planetary motion ... Kesennuma |
| Kesey, Ken ... Kgalagadi |
| Kgalagadi Transfrontier Park ... Kharagpur |
| Kharagpur hills ... Khomyakov, Aleksey Stepanovich |
| khon ... Kickham, Charles |
| Kicking Horse Pass ... Killanin, Michael Morris, 3rd Baron |
| Killarney ... kinetosome |
| kinety ... Kings County |
| Kings Mountain National Military Park ... Kiriasis, Sandra |
| Kiriath-sepher ... kit fox |
| Kit-Cat Club ... Klebnikov, Paul |
| Klebs, Edwin ... Knatchbull-Hugessen, Sir Hughe Montgomery |
| Knausgard, Karl Ove ... Knox, Henry |
| Knox, John ... Kodumbalur |
| Koeberlinia spinosa ... Kolbe, Georg |
| Kolbe, Hermann ... Konahuanui |
| Konan ... Kopet-Dag Range |
| Kopeysk ... Kortner, Fritz |
| Kortrijk ... Kounta |
| Kountche, Seyni ... Krasnyy Luch |
| Kraszewski, Jozef Ignacy ... Kroetsch, Robert |
| Krofta, Kamil ... Kuan-yin Hall |
| Kuantan ... Kuleshov effect |
| Kuleshov, Lev Vladimirovich ... Kunsthistorisches Museum |
| Kunstkammer ... Kurylowicz, Jerzy |
| Kurz, Hermann ... Kwantung Army |
| Kwanzaa ... |
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