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- Battle of Kabul (709) - Moslem Conquest of the East
- Battle of Kabul (1842) - First Afghan-British War
- Battle of Kadesh - 1472 BC - Egyptian-Canaanite War
- Battle of Kalcicrum (1799) - Wars of the French Revolution
- Battle of Kambula - 1879 - Anglo-Zulu War
- Battle of Kapyong 1951 - Korean War
- Battle of Karkar - 854 BC or 853 BC - Assyrian Wars of Conquest
- Battle of Kharistan - 737 - Umayyad-Turgesh Wars
- Battle of Kepaniwai - 1790 - Unification of Hawaiian Islands
- Siege of Khartoum - 1884/5 - The Mahdist, Anglo-Sudan War
- Battle of Killiecrankie - 1689 - Jacobite Uprising
- Siege of Kimberley - 1899/1900 - Second Boer War
- Battle of King's Mountain - 1780 - part of American Revolution
- Battle of Kircholm - 1605 - War between Sweden and Polish-Lithuanian Commonwealth for the Inflants
- Battle of Kleidion - 1014 - Byzantine-Bulgar Wars
- Battle of Kłuszyn - 1610, Poles defeat Russians during Times of Troubles in Russia.
- Battle of Knocknanuss- 1647- Irish Confederate Wars
- Battle of Kolin - 1757 - Seven Years' War
- Battle of Kolubara - 1914 - World War I
- Battle of Königgrätz - 1866 - Austro-Prussian War
- Battle of Kopidnadon - 788 - Byzantine–Arab Wars
- Battle of Kosovo - 1389 - Ottoman wars in Europe
- Battle of Kosovo (1448) - Ottoman wars in Europe
- Battle of Kosovo (1915) - World War I
- Battle of Krasos - 804 - Byzantine–Arab Wars
- Battle of Krbava field - 1493 - Ottoman-Croatian Wars
- Battles of Krithia - 1915 - World War I - Battle of Gallipoli
- First Battle of Krithia
- Second Battle of Krithia
- Third Battle of Krithia
- Battle of Krithia Vineyard
- Battle of Kunyang - 24 - Rise of the Eastern Han
- Battle of Kursk - 1943 - World War II
- Siege of Kut - 1915/16 - World War I
- Battle of Kyushu - 1281 - Mongol Invasions of Japan
Read more about this topic: List Of Battles (alphabetical)