Islands and dry-land coastal features

King Island (island, Australia)

King Island, Tasmania: 1,091 km2 island at the western entrance to Bass Strait between Tasmania and Victoria; population 1,617 (2021); known for dairy, shipwrecks, scheelite mining, and golf.

King Peninsula

King Peninsula, an ice-covered Antarctic peninsula about 100 nautical miles long and 20 wide in the Amundsen Sea sector, south of Thurston Island, forming the south side of Peacock Sound, with Cape Waite at its northwest extremity.

King William Island

King William Island (Qikiqtaq), Nunavut, Canada, lies between Boothia Peninsula and Victoria Island. Site of the 1845 Franklin expedition disaster, the Victory Point note, Amundsen's 1903-04 wintering, and the 2014 and 2016 wreck discoveries.

Kingman Reef

Kingman Reef is a largely submerged, uninhabited U.S. atoll in the North Pacific near Palmyra, a National Wildlife Refuge within the Pacific Remote Islands Marine National Monument, known for the world's greatest recorded coral reef fish biomass and apex-predator abundance.

Kiritimati

Kiritimati (Christmas Island) is the world's largest atoll by land area, 388 km², in the Northern Line Islands, Kiribati; population 7,369 (2020), low-lying, drought-prone, former British and US nuclear test site, now a copra, fishing and bonefish fly-fishing economy.

Kirkwood Islands

Kirkwood Islands (Kirkwood, Islotes), a scattered group of reefs and rocks with one larger islet in central Marguerite Bay, Antarctica, at 68°22'S 69°00'W; sighted 1949 and surveyed 1950 from the FIDS ship John Biscoe, named for Cdr. Henry Kirkwood, RN.

Kish Island

Kish Island (کیش, Arabic Qays) is a 90.5 km² resort and free-trade island 19 km off southern Iran in the Persian Gulf, a medieval Indian Ocean trading power later made Iran's first free trade zone in 1989.

Kitsap Peninsula

The Kitsap Peninsula is a large peninsula in the Puget Lowland of western Washington, between Puget Sound and Hood Canal, named for the Suquamish war leader Kitsap.

Knox Coast

Knox Coast, part of Wilkes Land, East Antarctica, between Cape Hordern (100.52°E) and the Hatch Islands (109.28°E); discovered February 1840 by Charles Wilkes's US Exploring Expedition and named for Lieutenant S.R. Knox of the tender Flying Fish.

Ko Pha-ngan (เกาะพะงัน)

Ko Pha-ngan (เกาะพะงัน), also spelled Koh Phangan, is a Gulf of Thailand island in Surat Thani province, Thailand, about 122 km² and fifth-largest Thai island, famous for the monthly Full Moon Party at Haad Rin beach.

Ko Phuket

Ko Phuket (ภูเก็ต), Thailand's largest island in the Andaman Sea, about 543 km²; formerly Junk Ceylon, a tin-mining island, now a major tourism destination with 14.12 million visitors in 2025.

Ko Samui

Ko Samui (เกาะสมุย) is an island and district in Surat Thani Province in the Gulf of Thailand, and Thailand's third largest island after Phuket and Koh Chang.

Koch Island

Koch Island (Koch-Insel, 科赫島) is an uninhabited 458 km² island in Foxe Basin, Qikiqtaaluk Region, Nunavut, Canada, off Baffin Island near Rowley and Bray Islands, officially named 5 November 1946.

Kodiak Archipelago

Kodiak Archipelago: island group in the Gulf of Alaska 30 miles from mainland Alaska across Shelikof Strait; main islands Kodiak, Afognak, Shuyak; home of Kodiak brown bear, Alutiiq Sugpiaq people, and Kodiak National Wildlife Refuge.

Kodiak Island

Kodiak Island, largest island in Alaska and second largest in the U.S., part of the Kodiak Archipelago; home of the Alutiiq people for 7,800+ years, first capital of Russian America, and center of a fishing economy with Kodiak brown bears.

Kola Peninsula (Кольский полуостров)

Kola Peninsula (Кольский полуостров), Russian Arctic peninsula between the Barents and White Seas in Murmansk Oblast; ice-free Murman coast, apatite and nickel mining, Murmansk port, and major naval nuclear bases.

Kolguyev Island

Ostrov Kolguyev (Колгуев, formerly Kholgola) is a Russian Arctic island in the southeastern Barents Sea, Nenets Autonomous Okrug, northeast of the Kanin Peninsula: tundra island of about 5,200 km², Nenets population in Bugrino, oil production since the 1980s, and a 2013–2014 reindeer collapse from over 12,000 to 153 animals.

Kolombangara Island

Kolombangara Island (Nduke), Solomon Islands: a near-circular extinct Pleistocene stratovolcano in Western Province, about 30 km across, 1,760 m high, with a 20,000 ha protected area above 400 m and endemic birds.

Komodo (island)

Komodo is a volcanic island in East Nusa Tenggara, Indonesia, between Sumbawa and Flores. It is the largest island of Komodo National Park and best known for the Komodo dragon.

Komsomolets Island

Komsomolets Island (остров Комсомолец) is the northernmost island of the Severnaya Zemlya archipelago in the Russian Arctic, discovered in 1913 and covering about 9,000 km².

Kos (Κως)

Kos (Κως, Cos), a Greek island in the southeastern Aegean and third largest of the Dodecanese (290.3 sq km), birthplace of Hippocrates, site of the ancient Asklepieion, ruled by Knights, Ottomans, and Italy, united with Greece in 1948.

Kosciusko Island

Kosciusko Island (Wyspa Kościuszki), an island in the Alexander Archipelago, southeastern Alaska, near northwest Prince of Wales Island across El Capitan Passage; coordinates 56.04°N 133.54°W, elevation about 1,096 feet, Silurian geology, Tongass and Alaska DNR management.

Kotelny

Kotelny (Ostrov Kotelny) is a large island in the Anzhu subgroup of the New Siberian Islands in the Russian Arctic, first sighted in 1773 and home to Temp air base.

Kra Isthmus

Kra Isthmus (Isthmus of Kra), narrowest part of the Malay Peninsula in southern Thailand, 44 km wide between Ranong and Chumphon; subject of a never-built canal proposal since 1677 and Thailand's 2021 land bridge project.

Krk

Otok Krk (Krk Island, locally Bodulija) is a Croatian island in the Kvarner Gulf, linked to the mainland by bridge, with Roman, Byzantine, Frankopan, and Venetian heritage and a tourism-led economy.

Kruzof Island

Kruzof Island, also historically Ostrov Tlikh, San Jacinto, and Crooze Island, is a 23-mile-long island in Alaska's Alexander Archipelago about 13 miles west of Sitka, dominated by the dormant 3,200-foot volcano Mount Edgecumbe and mostly Tongass National Forest land.

Kugong Island

Kugong Island, an uninhabited island in Qikiqtaaluk Region, Nunavut, Canada, also known in Eastern Canadian Inuktitut; the westernmost member of the Belcher Islands in Hudson Bay, about 321 km² and 54 km long, with 15 m base elevation, Belcher Group geology, and significant seabird and polar bear habitat.