Name In lake On island In lake Country Area (km2 ) Coordinates Notes Kokkosaari [ 9] Kokkohauta Sääminginsalo Saimaa Finland 0.88 61°59′20″N 29°12′55″E / 61.98889°N 29.21528°E / 61.98889; 29.21528 Claimed to be the world's largest island in a lake on an island in a lake. Another island, Suursaari ( 62°5′28″N 28°59′28″E / 62.09111°N 28.99111°E / 62.09111; 28.99111 ) in Hanhijärvi, is also located in Sääminginsalo, and is about half the size of Kokkosaari. Separated by an artificial canal, Sääminginsalo might not be considered an island. — Lake Chaunoy (Lac du Chaunoy) [ 10] René-Levasseur Island Manicouagan Reservoir Canada 0.44 51°33′5″N 68°49′8″W / 51.55139°N 68.81889°W / 51.55139; -68.81889 René-Levasseur Island is an artificial island, formed when the Manicouagan reservoir was flooded in 1970. There are also more than 10 other smaller islands in Lake Chaunoy, the largest of which is less than a tenth of the size of the one listed here. Treasure Island Lake Mindemoya Manitoulin Island Lake Michigan–Huron Canada 0.4 45°45′50″N 82°10′41″W / 45.76389°N 82.17806°W / 45.76389; -82.17806 Largest natural island on a lake on an island on a lake. Kakawaie Island Lake Kagawong Manitoulin Island Lake Michigan–Huron Canada 0.24 45°48′45″N 82°18′22″W / 45.81250°N 82.30611°W / 45.81250; -82.30611 Ryan Island [ 11] Siskiwit Lake Isle Royale Lake Superior United States 0.141 48°0′36″N 88°46′15″W / 48.01000°N 88.77083°W / 48.01000; -88.77083 Largest island in the largest lake on the largest island in the largest lake in the world (Lake Superior) — Second Lake Drummond Island Lake Michigan–Huron United States 0.044 46°03′2″N 83°35′55″W / 46.05056°N 83.59861°W / 46.05056; -83.59861 — [ 12] Mackaysee Lake Chambers Island Green Bay , Lake Michigan United States 0.009 45°11′41″N 87°20′43″W / 45.19472°N 87.34528°W / 45.19472; -87.34528 — Frith Lake Kelvin Island Lake Nipigon Canada 0.0013 49°52′29″N 88°40′53″W / 49.87472°N 88.68139°W / 49.87472; -88.68139 Piiroonsaari [ 9] Saravesi Kotasaari Kallavesi Finland 0.22 62°50′41″N 28°4′36″E / 62.84472°N 28.07667°E / 62.84472; 28.07667 Separated by an artificial canal, Kotasaari might not be considered an island. Suurisaari [ 9] Oininki Äitsaari Saimaa Finland 0.14 Ukonsaari [ 9] Kulkemus Partalansaari Pihlajavesi (Saimaa) Finland 0.12 61°40′9″N 28°23′43″E / 61.66917°N 28.39528°E / 61.66917; 28.39528 — Lake Cancy René-Levasseur Island Manicouagan Reservoir Canada 0.011 51°33′21″N 68°50′52″W / 51.55583°N 68.84778°W / 51.55583; -68.84778 — Lac des Pigamons Îlots Walcott Lake Mistassini Canada 0.0002 51°07′18″N 73°21′34″W / 51.12167°N 73.35944°W / 51.12167; -73.35944 — — Wilson Island Great Slave Lake Canada 0.011 61°50′7″N 112°46′57″W / 61.83528°N 112.78250°W / 61.83528; -112.78250 Raaskasaari Kylliönjärvi Viljakansaari Pihlajavesi (Saimaa) Finland 0.05 61°33′53″N 28°22′56″E / 61.56472°N 28.38222°E / 61.56472; 28.38222 — — Kållandsö Vänern Sweden 0.0027 58°41′52″N 13°11′18″E / 58.69778°N 13.18833°E / 58.69778; 13.18833 There is a second island in the lake, almost the exact same size Ösjöholmen Ösjön Ammerön Revsundssjön Sweden 0.008 62°51′57″N 15°10′23″E / 62.86583°N 15.17306°E / 62.86583; 15.17306 — — Tynnelsö Mälaren Sweden 0.0005 59°25′1″N 17°04′44″E / 59.41694°N 17.07889°E / 59.41694; 17.07889 — — — Lake Kovdozero Russia 0.0162 66°45′23″N 31°58′37″E / 66.75639°N 31.97694°E / 66.75639; 31.97694 — — Shaganappie Island Wollaston Lake Canada 0.0066 58°22′22″N 102°57′51″W / 58.37278°N 102.96417°W / 58.37278; -102.96417 — Calder Lake Malcolm Island Reindeer Lake Canada 0.0154 56°58′24″N 102°8′1″W / 56.97333°N 102.13361°W / 56.97333; -102.13361 — — Ispatinow Island Cree Lake Canada 0.00019 57°27′40″N 106°40′47″W / 57.46111°N 106.67972°W / 57.46111; -106.67972 — — Blanchet Island Great Slave Lake Canada 0.01 61°59′40″N 112°30′56″W / 61.99444°N 112.51556°W / 61.99444; -112.51556 Several small islands in this lake — Vanooyen Lake Shakespeare Island Lake Nipigon Canada 0.0182 49°39′36″N 88°24′10″W / 49.66000°N 88.40278°W / 49.66000; -88.40278 There is a second, smaller island in this lake. — Margaret Lake Elk Island God's Lake Canada 0.00095 54°39′32″N 94°10′44″W / 54.65889°N 94.17889°W / 54.65889; -94.17889 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.0006 54°39′29″N 94°10′37″W / 54.65806°N 94.17694°W / 54.65806; -94.17694 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.0002 54°39′29″N 94°10′34″W / 54.65806°N 94.17611°W / 54.65806; -94.17611 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.00015 54°39′29″N 94°10′33″W / 54.65806°N 94.17583°W / 54.65806; -94.17583 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.00002–5 54°39′29″N 94°10′39″W / 54.65806°N 94.17750°W / 54.65806; -94.17750 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.00004–10 54°39′26″N 94°10′44″W / 54.65722°N 94.17889°W / 54.65722; -94.17889 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.000015-50 54°39′27″N 94°10′31″W / 54.65750°N 94.17528°W / 54.65750; -94.17528 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.000005-20 54°39′32″N 94°10′25″W / 54.65889°N 94.17361°W / 54.65889; -94.17361 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.000005–20 54°39′36″N 94°10′36″W / 54.66000°N 94.17667°W / 54.66000; -94.17667 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.000005-20 54°39′43″N 94°11′03″W / 54.66194°N 94.18417°W / 54.66194; -94.18417 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.000005–20 54°39′42″N 94°11′05″W / 54.66167°N 94.18472°W / 54.66167; -94.18472 Several small islands in this lake – Margaret Lake Elk Island God's Lake Canada ~0.000001–5 54°39′43″N 94°10′57″W / 54.66194°N 94.18250°W / 54.66194; -94.18250 Several small islands in this lake — — Ile Guillaume Couture Lac Mistassini Canada 0.0017 50°55′1″N 73°37′32″W / 50.91694°N 73.62556°W / 50.91694; -73.62556 — — Ile Tchapahipane Lac Mistassini Canada 0.00125 51°4′34″N 73°25′25″W / 51.07611°N 73.42361°W / 51.07611; -73.42361 — — Pie Island Lac Mistassini Canada 0.0086 48°13′58″N 89°3′26″W / 48.23278°N 89.05722°W / 48.23278; -89.05722 Two islands of similar size are in this lake — Muir Lake St Ignace Island Lake Superior Canada 0.00325 48°48′28″N 88°2′3″W / 48.80778°N 88.03417°W / 48.80778; -88.03417 — Antler Lake St Ignace Island Lake Superior Canada 0.0041 48°48′59″N 88°0′5″W / 48.81639°N 88.00139°W / 48.81639; -88.00139 Two islands of similar size are in this lake — Williamson Lake St Ignace Island Lake Superior Canada 0.00425 48°48′4″N 88°1′39″W / 48.80111°N 88.02750°W / 48.80111; -88.02750 — Molinski Lake Simpson Island Lake Superior Canada 0.01 48°49′13″N 87°42′51″W / 48.82028°N 87.71417°W / 48.82028; -87.71417 — Caribou Lake Simpson Island Lake Superior Canada 0.00465 48°45′51″N 87°39′33″W / 48.76417°N 87.65917°W / 48.76417; -87.65917 — Veronica Lake Slate Islands Lake Superior Canada 0.0065 48°39′28″N 86°59′23″W / 48.65778°N 86.98972°W / 48.65778; -86.98972 — Michi Lake Michipicoten Island Lake Superior Canada 0.0037 47°44′28″N 85°54′29″W / 47.74111°N 85.90806°W / 47.74111; -85.90806 There are three islands in total in this lake — Channel Lake Michipicoten Island Lake Superior Canada 0.0084 47°43′50″N 85°48′0″W / 47.73056°N 85.80000°W / 47.73056; -85.80000 A second, smaller island is immediately to the west of this one. — — — Knielinger See Germany 0.0003 49°01′52.5″N 8°18′34.3″E / 49.031250°N 8.309528°E / 49.031250; 8.309528 — — Wizard Island Crater Lake United States — Lac Civic Île Bronson Réservoir Cabonga Canada There are other islands in lakes on islands in Cabonga. – – – Dubawnt Lake Canada 63°15′36″N 101°08′08″W / 63.26000°N 101.13556°W / 63.26000; -101.13556 Viewable on Google Earth only. As of 10 July 2024 (according to Google Earth data), the island did not collide with its island. – – Xishan Island Lake Tai China 31°8′31.25″N 120°20′30.17″E / 31.1420139°N 120.3417139°E / 31.1420139; 120.3417139 Two small islands. The unnamed lake together with the other two surrounding lakes, is collectively called '无机坑 (wújīkēng)' and is the site of a former quarry.