15 Largest Lakes in the World (2026)

The largest lake on Earth is called a sea, sits in a basin floored by oceanic crust, and is brackish enough to support its own species of seal — and every serious ranking still counts the Caspian Sea as a lake, because rivers run into it and none run out again. That one decision opens a countdown running from 389,000 km² down to 16,400 km², across fifteen lakes and, as it happens, fifteen countries. Two rules shape the rest of it. We rank present-day extent, which is why the Aral Sea is absent: it covered roughly 68,000 km² in 1960, enough for third place here, and irrigation canals have taken almost all of it since. And we use the conventional lake boundaries, which is why Michigan and Huron sit apart — hydrologically they are one lake at one elevation, joined at the Straits of Mackinac, and counted together their combined 117,400 km² would displace Lake Superior at the top of the freshwater rankings.

Map of Largest Lakes in the World

Largest Lakes in the World

The Ranking at a Glance

MetricImperial

1Caspian Sea389,000 km²150,194 sq miKazakhstan / Russia+32Lake Superior82,100 km²31,699 sq miCanada / United States3Lake Victoria59,947 km²23,146 sq miTanzania / Uganda+14Lake Huron59,570 km²23,000 sq miCanada / United States5Lake Michigan57,800 km²22,317 sq miUnited States6Lake Tanganyika32,900 km²12,703 sq miTanzania+37Lake Baikal31,722 km²12,248 sq miRussia8Great Bear Lake31,153 km²12,028 sq miCanada9Lake Malawi29,600 km²11,429 sq miMalawi / Mozambique+110Great Slave Lake27,200 km²10,502 sq miCanada11Lake Erie25,667 km²9,910 sq miCanada / United States12Lake Winnipeg24,514 km²9,465 sq miCanada13Lake Ontario19,011 km²7,340 sq miCanada / United States14Lake Ladoga17,700 km²6,834 sq miRussia15Lake Balkhash16,400 km²6,332 sq miKazakhstan

Fun Facts About the World's Largest Lakes

1. Caspian Sea

At 389,000 km², the Caspian Sea is bigger than the next five lakes on this list put together. It stretches roughly 1,030 km from the Volga delta in the north down to the Iranian shore, touching five countries on the way — Kazakhstan, Russia, Turkmenistan, Azerbaijan and Iran — and its water is brackish rather than fresh, about a third as salty as the ocean. The basin beneath it is a remnant of the ancient Paratethys, an arm of sea that was sealed off when the land rose around it, which is why the floor is oceanic crust rather than continental.

Whether it counts as a lake at all has been argued over in geology journals and in treaty negotiations alike, because the answer changes how the oil and gas beneath it are divided between the five states on its shore. Geographers settle the question on hydrology: the Caspian is endorheic, with no outlet to any ocean, and on that test it is unambiguously a lake — and by a very wide margin the biggest one. Its level is falling fast. In July 2025 the surface sat lower than 29 m below sea level, the lowest reading yet recorded.

2. Lake Superior

At 82,100 km², Lake Superior is the largest freshwater lake in the world by surface area — and the third largest by volume, behind only Baikal and Tanganyika, both of which appear further down this list. It lies along the border between Ontario and the states of Minnesota, Wisconsin and Michigan, deep and cold enough that its temperature barely climbs through the summer. The rock around it is some of the oldest exposed anywhere on the continent, and much of the north shore rises straight out of the water in cliffs and headlands.

Superior's reputation, though, is built on its weather. Autumn gales drive waves big enough to sink lake freighters, and the wrecks scattered across its floor are preserved close to intact by water that stays near freezing all year. For visitors the draw is the shoreline: the sea caves and sandstone arches of the Apostle Islands, agate beaches, and the long empty stretches of the Canadian side where the highway runs for hours with nothing but rock and spruce between it and the water.

3. Lake Victoria

At 59,947 km², Lake Victoria is Africa's largest lake and the largest tropical lake in the world — though that figure comes with an asterisk. An older survey tradition puts it nearer 68,800 km², and Britannica gives 69,484 km²; the gap between them turns largely on how the lake's many islands are counted. Victoria places third on either number, but the water-surface figure used here leaves it just 377 km² clear of Lake Huron. Tanzania, Uganda and Kenya each hold a share of the shoreline, and the lake drains north into the Nile.

For its size it is remarkably shallow — nothing like the depths of the rift lakes to its west — which is part of why it warms, mixes and responds to shifts in rainfall so quickly. It supports one of the largest inland fisheries anywhere, and the introduction of Nile perch during the twentieth century reshaped it completely, driving a boom in the commercial catch and a collapse among the lake's endemic cichlids. The ports of Mwanza, Kisumu and Entebbe sit on its shores, and the Ssese Islands lie off the Ugandan side.

4. Lake Huron

At 59,570 km², Lake Huron is the second-largest of the Great Lakes, and on the water-surface figures used here it trails Lake Victoria by only 377 km² — the narrowest gap anywhere in this countdown. It has the longest shoreline of the five, folded around Georgian Bay and the North Channel, and it holds Manitoulin Island, the largest island in any lake in the world.

Huron and Michigan meet at the Straits of Mackinac and sit at precisely the same elevation, which makes them a single lake in hydrological terms — the reason a combined Lake Michigan–Huron occasionally turns up at the head of these rankings. Convention keeps the two apart, and Huron holds its own character regardless: the white limestone of the Bruce Peninsula, the shipwrecks lying in Thunder Bay's clear shallows, and the granite archipelago known as the Thirty Thousand Islands strung along the Georgian Bay shore.

5. Lake Michigan

At 57,800 km², Lake Michigan is the largest lake that lies entirely within a single country — the only one of the Great Lakes with no Canadian shore. Michigan, Wisconsin, Illinois and Indiana all front onto it, and Chicago stands at its southern tip with its skyline rising straight off the water. The eastern shore carries something less expected: the largest freshwater dune system in the world, piled up over thousands of years by prevailing westerlies pushing sand across the open lake.

Because it runs north to south rather than east to west, Michigan spans a genuine climate range, with orchards and vineyards on the sheltered eastern side and a northern end that freezes hard. The lake makes its own weather too, dumping snow along the Michigan shore whenever cold air crosses open water. Sleeping Bear Dunes and the Indiana Dunes protect long stretches of the coast, and the water in the northern basin runs clear enough to pick out wrecks from the surface.

6. Lake Tanganyika

At 32,900 km², Lake Tanganyika ranks sixth by surface area but second in the world by both depth and volume. It is a trench rather than a basin — roughly 670 km long, rarely more than 50 km wide, and dropping past 1,470 m at its deepest point as it follows the floor of the Albertine Rift. Tanzania, the Democratic Republic of the Congo, Burundi and Zambia each hold a stretch of the shore.

That depth is what makes it strange. Below about 200 m the water carries no oxygen at all, so effectively every living thing in Tanganyika is packed into a thin sunlit band around the edges — and that band is extraordinarily crowded, with hundreds of cichlid species found in this lake and nowhere else on Earth. It is old enough for that evolution to have run a very long way, ranking among the most ancient lakes on the planet alongside Baikal.

7. Lake Baikal

At 31,722 km², Lake Baikal sits only seventh here by surface area, and it is the most remarkable lake on the list by nearly every other measure. It is the deepest lake in the world at 1,642 m, among the oldest at roughly 25 million years, and the largest of them all by volume — holding around 19% of the unfrozen fresh water on the planet's surface, in a basin a fraction the size of the Great Lakes.

Baikal lies in a continental rift that is still pulling apart, which is why it keeps getting deeper. Its water is famously clear, and in late winter the ice turns transparent and cracks into slabs you can see straight through. More than half its fish species are endemic, and among some invertebrate groups the share runs past 90%; the nerpa lives here and nowhere else, the world's only seal that spends its whole life in fresh water. The Circum-Baikal Railway traces part of the southern shore, and the winter ice road across the lake becomes a route in its own right.

8. Great Bear Lake

At 31,153 km², Great Bear Lake is the largest lake lying wholly within Canada — Superior and Huron are bigger, but both straddle the border with the United States. It sits astride the Arctic Circle in the Northwest Territories, between roughly 65 and 67 degrees north, cold enough that ice covers it for much of the year and the water beneath never really warms through.

Almost nobody lives on it. Délı̨nę, a Sahtú Dene community near the head of the Great Bear River, sits on the western shore, and beyond it the lake is reached by float plane in summer and by winter road once the ice sets. The fishing is one draw — the largest lake trout ever taken by angling anywhere, a 32.65 kg fish, came out of this water in 1995 — and the emptiness is the other: five long arms reaching out into tundra and taiga, with no road running around any of them.

9. Lake Malawi

At 29,600 km², Lake Malawi — Lake Nyasa on the Tanzanian side, Lago Niassa in Mozambique — fills the southern end of the East African Rift and dominates the map of the country it is named after. It runs some 580 km from north to south and drops to 706 m at its deepest, another rift trench rather than a shallow pan, with Malawi, Mozambique and Tanzania sharing its shoreline.

It has more species of fish than any other lake in the world. Most are cichlids, most exist nowhere else, and many are the brilliantly coloured mbuna that fill home aquariums on every continent. Lake Malawi National Park at the southern end was the world's first freshwater national park, inscribed by UNESCO in 1984 for cichlid diversity that has been compared to the Galápagos finches, and the combination of clear water and rocky shorelines makes this one of the few African lakes people come to snorkel.

10. Great Slave Lake

At 27,200 km², Great Slave Lake is the deepest lake in North America, dropping to about 614 m in its eastern arm — half again as deep as Lake Superior, in a lake barely a third the size. It sits in the Northwest Territories, fed by the Slave River and drained by the Mackenzie, which begins here and runs north to the Arctic Ocean.

Yellowknife stands on the northern shore, capital of the territory and the reason the lake has a highway to it at all. In winter the ice thickens enough to carry trucks, and ice roads run out across the surface to communities and diamond mines that have no summer access by land. The eastern arm is different country again — bare Canadian Shield rock, deep cold water, and the cliffs and islands of Thaidene Nëné, a national park reserve established on Łutsël K'é Dene land.

11. Lake Erie

At 25,667 km², Lake Erie is the shallowest of the Great Lakes by a wide margin, averaging only around 19 m — and that shallowness drives almost everything else about it. It warms fastest in spring, freezes most completely in winter, and cycles its whole volume in a fraction of the time the deeper lakes take. Ontario, Ohio, Pennsylvania, New York and Michigan all front onto it.

Warm shallow water and a farm-heavy watershed also make Erie the most biologically productive of the five, and the most troubled. It carries one of the world's largest freshwater commercial fisheries, and it is the Great Lake where summer algal blooms return as a recurring problem. The shoreline is the busiest too, with Cleveland and Buffalo at either end, vineyards and beaches along the Ohio and Ontario coasts, and Point Pelee reaching down into the water at the southernmost tip of mainland Canada.

12. Lake Winnipeg

At 24,514 km², Lake Winnipeg is the third-largest lake lying entirely within Canada, behind Great Bear and Great Slave, and comfortably the largest in Manitoba. It is also strikingly shallow for its size, averaging around 12 m, and that is a legacy of how it formed: Winnipeg is what remains of Lake Agassiz, the vast glacial lake that covered much of central North America as the ice sheets melted away.

Shallow water and an enormous drainage basin — it collects from four provinces and four American states — leave the lake productive and fragile in the same breath, and nutrient loading has made its algal blooms a long-running provincial concern. The eastern shore is the appealing side, with long sand beaches, boreal forest running down to the waterline, and the dunes at Grand Beach. Commercial fishing still works the lake through the ice each winter, and the northern basin drains on toward Hudson Bay by way of the Nelson River.

13. Lake Ontario

At 19,011 km², Lake Ontario is the smallest Great Lake by surface area, though not by volume, where it comfortably outweighs the shallower Erie. It sits lowest in the chain, roughly 100 m below the level of Erie, and Niagara Falls is the step between the two.

That drop is also why Ontario is a different lake biologically: the falls block fish moving upstream, so the four lakes above it have a separate history of arrivals from the one Ontario received from the Atlantic by way of the St Lawrence. Its shoreline is the most heavily settled on the Great Lakes, carrying Toronto, Hamilton and Rochester along with the whole Golden Horseshoe around the western end. The Thousand Islands mark the outlet, where the lake narrows into the St Lawrence River and begins its run to the sea.

14. Lake Ladoga

At 17,700 km², Lake Ladoga is the largest lake lying entirely within Europe — the Caspian is far bigger but straddles the continental boundary. It sits just northeast of St Petersburg in Russian Karelia and drains through the short Neva River into the Gulf of Finland. Its northern end is deep and rocky, cut into fjord-like inlets and scattered with hundreds of small islands, while the southern end runs shallow and sandy.

Ladoga carries a great deal of history for a lake. Valaam Monastery has occupied an archipelago in its northern waters since the medieval period, and the Ladoga ringed seal — landlocked here since the last glaciation and found nowhere else — still breeds on the ice. During the siege of Leningrad the frozen surface carried the supply route into the city, and that winter crossing remains the thing the lake is best known for in Russia.

15. Lake Balkhash

At 16,400 km², Lake Balkhash rounds out the list, and it is arguably the strangest entry on it. A long narrow peninsula almost pinches the lake in two, and the two halves hold different water: the western basin, fed by the Ili River, is fresh enough to drink, while the eastern basin, receiving far less inflow, is saline.

Balkhash lies in an endorheic basin in southeastern Kazakhstan, so its level depends entirely on what the rivers bring against what evaporation takes. Both have moved against it — the lake covered roughly 23,000 km² in 1910, and a century of dam-building and irrigation on the Ili has pulled it a long way back from that. It remains a major staging post on a migratory bird flyway, and the reed beds of the Ili delta draw them in enormous numbers.

FAQ: The World's Largest Lakes

What is the largest lake in the world?

The Caspian Sea, at 389,000 km² — larger than the next five lakes on this list combined. Its name and its brackish water make it sound like a sea, but no river carries its water out to an ocean, and that endorheic drainage is what makes it a lake by the standard geographers apply.

What is the largest freshwater lake in the world?

It depends which way you measure. Lake Superior is the largest by surface area at 82,100 km². Lake Baikal is the largest by volume, holding roughly 19% of the planet's unfrozen surface fresh water in a basin less than half Superior's size, because it is more than four times as deep.

Why isn't the Aral Sea on this list?

Because this ranking uses present-day surface area. The Aral Sea covered around 68,000 km² in 1960, which would have placed it third, but Soviet-era irrigation diverted the rivers feeding it and the lake lost the overwhelming majority of its water. What survives is split into fragments far too small to qualify.

Are Lake Michigan and Lake Huron really one lake?

Hydrologically, yes. They join at the Straits of Mackinac and sit at exactly the same elevation, so water moves freely between them and they rise and fall together. Counted as a single lake, Michigan–Huron would cover about 117,400 km² and outrank Lake Superior. Convention keeps them separate, and so does this list.

Which continent has the most of the world's largest lakes?

North America, with eight of the fifteen. Five are Great Lakes — Superior, Huron, Michigan, Erie and Ontario — and three more sit in Canada's north and prairies: Great Bear, Great Slave and Winnipeg. Africa contributes three rift lakes, Eurasia the remaining four including the Caspian.