World Factbook
- Kabardino-Balkaria (region)
- Kabul (capital)
- Kaduna (city)
- Kalaallit Nunaat (local name for Greenland)
- Kalimantan (region)
- Kaliningrad (region; formerly part of East Prussia)
- Kamaran (island)
- Kamchatka Peninsula (Poluostrov Kamchatka)
- Kampala (capital)
- Kampuchea (former name for Cambodia)
- Kane Basin (portion of channel)
- Kanton Island
- Karachevo-Cherkessia (region)
- Karachi (city)
- Karafuto (island; former name for southern Sakhalin Island)
- Kara Sea
- Karelian Isthmus
- Karimata Strait
- Katanga (region)
- Kathmandu (capital)
- Kattegat (strait)
- Kauai Channel
- Kazakstan (former name for Kazakhstan)
- Keeling Islands
- Kerguelen, Iles (island group)
- Kermadec Islands
- Khabarovsk (city)
- Khartoum (capital)
- Khios (island)
- Khmer Republic (former name for Cambodia)
- Khuriya Muriya Islands (Kuria Muria Islands)
- Kibris (Turkish local name for Cyprus)
- Kiel Canal (Nord-Ostsee Kanal)
- Kiev (city; former name for Kyiv)
- Kigali (capital)
- Kingston (capital)
- Kingstown (capital)
- Kinshasa (capital)
- Kipros (Greek local name for Cyprus)
- Kirghiziya, Kirgizia (former name for Kyrgyzstan)
- Kirguizstan (local name for Kyrgyzstan)
- Kiritimati (Christmas Island)
- Kishinev (see Chisinau)
- Kithira Strait
- Kobe (city)
- Kodiak Island
- Kodok (town; also Fashoda)
- Kola Peninsula (Kol'skiy Poluostrov)
- Kolonia (town; former capital; changed to Palikir)
- Korea, Democratic People's Republic of
- Korea, Republic of
- Korea Bay
- Korea Strait
- Koror (capital)
- Kosovo (region)
- Kosrae (island)
- Kowloon (city)
- Krakatoa (volcano)
- Krakow (city)
- Kuala Lumpur (capital)
- Kunashiri (island; also Kunashir)
- Kunlun Mountains
- Kuril Islands
- Kuwait (capital)
- Kuznetsk Basin
- Kwajalein Atoll
- Kyiv (capital)
- Kyushu (island)