The Ganges is not on this list. Neither is the Danube, the Rhine, the Colorado, nor the Volga — Europe's longest river, which misses the cut by a few hundred kilometres. The fifteen that do qualify run from 3,969 km to 6,650 km and reach the sea in twelve different countries, on every continent except Antarctica and Australia. Two rules decide the order. The first is how a river is measured: we use river-system length, tracing the water from its most distant headwater through the named tributaries that feed it, down to the mouth. That is the convention every major reference work uses, and it is why the Mississippi appears here as the Mississippi–Missouri at 6,275 km rather than the 3,766 km of the main stem alone. The second is that every entry is a living river, flowing today. Where a measurement is genuinely disputed — and the top two are the most disputed numbers in geography — we say so rather than pick a side quietly.
15 Longest Rivers in the World (2026)
The record The longest river in the world is the Nile — 6,650 km (4,130 mi), length. It spans Egypt, Ethiopia, Eritrea, Sudan, South Sudan, Uganda, Tanzania, Kenya, Rwanda, Burundi and the Democratic Republic of the Congo. Source: Wikipedia List of river systems by length, citing Britannica. Verified .
Longest Rivers in the World The Ranking at a Glance
Fun Facts About the World’s Longest Rivers
- The top four are separated by just 375 km 233 mi. The Nile, the Amazon, the Yangtze and the Mississippi–Missouri all fall inside a six per cent spread — which is why small changes in how a source is defined can reshuffle the leaderboard.
- Russia has four of the fifteen, more than any other country. The Yenisei, the Ob–Irtysh, the Amur and the Lena together drain most of Siberia.
- Four of them empty into the Arctic Ocean. The Yenisei and the Ob reach the Kara Sea, the Lena the Laptev Sea and the Mackenzie the Beaufort Sea — all four freeze over for a large part of the year.
- Only four stay inside a single country. The Yangtze and the Yellow River run entirely within China, the Lena within Russia and the Mackenzie within Canada; every other basin here is shared, and the Nile’s reaches into eleven nations.
- One river crosses the equator twice. The Congo loops north and back south again, so one half of its basin is always in a wet season — the reason its flow stays steadier than any comparable river’s.
- One starts 240 km from the sea and takes 4,200 km to get there. The Niger rises close to the Atlantic, turns inland toward the Sahara, then doubles back — a course so unlikely that European geographers refused to believe it for centuries.
1. Nile
At 6,650 km 4,130 mi, the Nile is the longest river in the world by the conventional measure — and the holder of the most argued-over record in geography. It gathers from two great branches: the White Nile, which rises in the highlands of Rwanda and Burundi and passes through Lake Victoria, and the Blue Nile, which drops out of Ethiopia's Lake Tana and supplies most of the water and nearly all of the silt. They meet at Khartoum in Sudan, and from there a single channel runs north through the desert to the Mediterranean.
The dispute is worth understanding before you accept the number. In 2007 and 2008 a Brazilian-led team put the Amazon at 6,992 km and the Nile at 6,853 km, which would reverse the order; a peer-reviewed study published in 2009 measured them again and returned 7,088 km for the Nile against 6,575 km for the Amazon, widening the Nile's lead instead. Britannica and the standard reference tables still list the Nile first at 6,650 km, which is the figure used here. For travellers the Egyptian reach is the accessible one — Aswan, the temples at Luxor, and the green ribbon of floodplain that the river draws through otherwise empty desert.
2. Amazon
At 6,400 km 3,976 mi, the Amazon is second on length and first on everything else. It carries a greater volume of water than any other river on Earth, discharging more than the next several largest rivers combined, and its basin drains roughly seven million square kilometres across Brazil, Peru and Colombia. The main stem begins in the Peruvian Andes and crosses the continent almost due east, gathering tributaries that would each rank as major rivers in their own right.
Its length is unsettled for a specific reason: nobody fully agrees where it starts. The traditional source is Nevado Mismi in southern Peru, but a 2014 study argued the most distant headwater actually sits in the Mantaro drainage, which would add several dozen kilometres. The counter-argument is that the Mantaro runs dry for months each year when a dam upstream diverts it, and the accepted definition of a source requires continuous flow. Downstream none of that is in doubt — the river is so wide through much of Brazil that no bridge crosses the main stem, and boats remain the way people travel.
3. Yangtze
At 6,300 km 3,917 mi, the Yangtze is the longest river in Asia and the longest anywhere that runs its entire course inside a single country. It rises on the Tibetan Plateau, cuts east through the mountains of Sichuan, squeezes through the Three Gorges, then widens across the flood plains of central China before reaching the East China Sea at Shanghai.
It is also the most heavily worked river on this list. The Three Gorges Dam sits on its middle reach, and the river has carried freight and people through the Chinese interior for millennia — the corridor along it holds a substantial share of the country's population. The scenic stretch most visitors see is the gorge section between Chongqing and Yichang, where the valley narrows between steep cliffs and the cruise boats run. Upstream of that, on the Jinsha headwater reach, Tiger Leaping Gorge in Yunnan is one of the deepest river canyons anywhere and a well-established trekking route.
4. Mississippi–Missouri
At 6,275 km 3,902 mi, the Mississippi–Missouri is the longest river system in North America and the clearest illustration of why the measuring rule on this list matters. Taken alone, the Mississippi runs about 3,766 km and would not appear in the top twenty. Traced properly — from the Hell Roaring Creek headwaters in Montana, down the Red Rock, Beaverhead and Jefferson into the Missouri, and only then into the Mississippi at St Louis — the system stretches to fourth place worldwide.
The two halves are strikingly different rivers. The Missouri is the longer arm, running clear then silt-heavy across the Great Plains; the Mississippi below the confluence is the broad, slow, levee-lined channel that reaches the Gulf of Mexico through a delta south of New Orleans. Between them they drain about forty per cent of the continental United States. The lower river is the one most people meet, whether from the levee at New Orleans, the bluffs around Memphis, or one of the paddle-wheel boats that still work the channel.
5. Yenisei–Angara–Selenga
At 5,539 km 3,445 mi, the Yenisei system is the longest of Siberia's great north-flowing rivers, and the one with the most interesting plumbing. Measured from the Ider in Mongolia, the water runs down the Selenga into Lake Baikal, leaves the lake as the Angara, and only then joins the Yenisei proper for the long run north to the Kara Sea. Baikal sits in the middle of the system like a reservoir, which is part of why the Yenisei's flow stays comparatively steady.
It is a cold river for most of its life. The lower course freezes hard each winter and the spring break-up sends ice downstream in a rush that regularly dams the channel and floods the banks. Krasnoyarsk is the main city on it, and beyond that the settlements thin out quickly — Dudinka, near the mouth, is one of the northernmost ports anywhere and is reached by ship rather than road. The river is the effective boundary between the flat West Siberian Plain and the higher, rockier Central Siberian Plateau.
6. Yellow River
At 5,464 km 3,395 mi, the Yellow River is the second-longest river in China and the one with the strongest claim on the country's history. It takes its name and its colour from loess — the fine, wind-blown soil it picks up crossing the plateau of the same name, in quantities high enough to make the water genuinely opaque. That sediment is also what built the North China Plain, where Chinese civilisation first took shape along the river's banks.
The same silt made it dangerous. Deposited on the bed, it raises the channel year after year until the river runs above the surrounding farmland behind its own dykes, and historical breaches were catastrophic enough to earn it the name "China's Sorrow". Its course has shifted dramatically over recorded history, at times reaching the sea hundreds of kilometres from where it does now. Today it empties into the Bohai Sea through a young, shifting delta in Shandong that has become a protected wetland and a serious birdwatching site.
7. Ob–Irtysh
At 5,410 km 3,364 mi, the Ob–Irtysh is the westernmost of Siberia's three great north-flowing rivers and drains the enormous, almost perfectly flat West Siberian Plain. The Irtysh is the longer arm, rising in the Altai mountains on the Chinese border and running through Kazakhstan before joining the Ob in Siberia; the combined river then flows north into the Gulf of Ob, a long inlet of the Kara Sea that is itself several hundred kilometres from end to end.
Because the land it crosses is so flat, the Ob spreads out rather than cutting down. Its floodplain is measured in tens of kilometres in places, and the basin holds some of the largest wetlands and peat bogs on the planet. The river flows north into ground that thaws later than its headwaters, so meltwater arrives before the lower channel has opened and backs up across the plain each spring. Novosibirsk, Russia's third-largest city, sits on the Ob, and the river remains a working freight route through a region with few roads.
8. Paraná–Río de la Plata
At 4,880 km 3,030 mi, the Paraná system is South America's second-longest after the Amazon and the spine of the continent's southern half. It rises in the Brazilian highlands, runs south-west along the Paraguay–Argentina frontier gathering the Paraguay river on the way, and finishes in the Río de la Plata, the vast estuary between Buenos Aires and Montevideo that is wide enough to look like open sea from either shore.
It is a heavily engineered river. The Itaipú Dam on the Brazil–Paraguay stretch is one of the largest hydroelectric plants in the world by output, and the lower Paraná is a working shipping channel carrying grain from the interior out through Rosario. The delta above Buenos Aires is the surprise: a maze of wooded islands and narrow channels where people live in stilt houses and travel by boat, reachable on a short trip from the city. The Iguazú Falls sit on a tributary rather than the main stem, but they belong to the same basin.
9. Congo–Chambeshi
At 4,700 km 2,922 mi, the Congo is Africa's second-longest river and the deepest river in the world, with soundings past 220 m in the lower gorges. Traced from the Chambeshi in Zambia, it runs through the Democratic Republic of the Congo as the Lualaba, curves in a great arc through the rainforest, and reaches the Atlantic at Banana. It is the only major river to cross the equator twice, which is why its flow barely varies: when one hemisphere's basin is in its dry season, the other is in its wet one.
It carries more water than any river except the Amazon, and the last stretch to the sea drops through the Livingstone Falls, a run of rapids so violent that ocean shipping cannot reach the interior — the reason the river was navigated from the inside out rather than from the mouth upstream. Above the rapids the middle Congo is broad, slow and lined with rainforest, and the riverboats between Kinshasa and Kisangani remain one of the more demanding journeys in African travel.
10. Amur–Argun
At 4,444 km 2,763 mi, the Amur is the longest undammed river in the Eastern Hemisphere and forms much of the border between Russia and China. Measured from the Argun headwater, it runs east along the frontier, turns north-east through the Russian Far East, and empties into the Strait of Tartary opposite Sakhalin. Chinese sources call it the Heilong Jiang, the Black Dragon River, after the dark water it carries.
Its basin is one of the great temperate wildernesses, holding taiga, wetland and floodplain forest, and it supports run after run of migrating salmon as well as some of the largest surviving populations of Amur tiger and Amur leopard in the border reserves either side of the channel. The river freezes solid enough each winter to be crossed on the ice. Khabarovsk is the main Russian city on it, sitting where the Ussuri comes in from the south, and the long-distance train from Vladivostok crosses the Amur there on a bridge that is among the longest in Russia.
11. Lena
At 4,400 km 2,736 mi, the Lena is the easternmost of Siberia's three great north-flowing rivers, and it runs almost its entire course over permafrost. It rises in the mountains west of Lake Baikal and flows north-east then due north to the Laptev Sea, inside the Arctic Circle, where it fans into a delta of more than thirty thousand square kilometres — one of the largest and least visited river deltas anywhere.
The frozen ground shapes everything about it. There is no through road along most of its length, so the river itself is the highway: boats in the short summer, an ice road on the channel in winter. Yakutsk, the largest city built on permafrost, sits on its bank and has no permanent bridge across. The best-known sight is the Lena Pillars, a wall of eroded limestone towers standing along the river south of Yakutsk that is a UNESCO World Heritage Site and is reached by boat from the city.
12. Mekong
At 4,350 km 2,705 mi, the Mekong runs through six countries on its way to the sea. It starts on the Tibetan Plateau as the Lancang, drops through steep gorges in Yunnan, then forms long stretches of the borders between Myanmar, Laos and Thailand before crossing Cambodia and breaking into the delta that reaches the sea in southern Vietnam.
It does something no other major river does. Each monsoon the flow becomes so great that it pushes water backwards up the Tonlé Sap tributary in Cambodia, reversing the current and swelling the lake at its head to several times its dry-season size — a flood pulse that drives one of the most productive inland fisheries in the world. The river is central to travel through the region: the slow boat between the Thai border and Luang Prabang, the Four Thousand Islands in southern Laos, the floating markets of the Vietnamese delta, and the temple complex at Angkor, which the Tonlé Sap system supported.
13. Mackenzie–Peace–Finlay
At 4,241 km 2,637 mi, the Mackenzie system is the longest river in Canada and the second-longest in North America. Traced from the Finlay in the mountains of British Columbia, it runs through the Peace, into the Slave, through Great Slave Lake, and only then becomes the Mackenzie for the final run north-west to the Beaufort Sea. The lakes along the way act as settling basins, so the river below them runs clearer than its length would suggest.
It is a genuinely remote river. The Mackenzie flows through the Northwest Territories with only a handful of small communities on its banks, most of them accessible by air, by boat, or by winter road across the frozen channel. It carries ice for much of the year and the break-up in late spring is a regional event. The delta at the top, where the river meets the Arctic Ocean near Inuvik, is a maze of channels and lakes that is a major staging ground for migrating birds and one of the largest Arctic deltas in the world.
14. Niger
At 4,200 km 2,611 mi, the Niger is the third-longest river in Africa and takes the strangest route of any river here. It rises in the Guinea highlands only about 240 km from the Atlantic, then turns away from the sea and runs north-east into the Sahara, reaching the desert's edge near Timbuktu before swinging back south-east through Niger and Nigeria to reach the Gulf of Guinea. The boomerang confused European geographers for centuries, who could not accept that a river would flow inland.
The explanation is that it was originally two separate rivers, later joined when the northern one captured the southern one's headwaters. Along the top of the curve it spreads into the Inner Niger Delta, a seasonal inland wetland the size of a small country that floods each year and supports fishing, herding and rice growing across Mali. At the other end, the Niger Delta proper is one of the largest river deltas in the world and the centre of Nigeria's oil industry. Between them the river passes Bamako, Timbuktu and Niamey.
15. Brahmaputra–Yarlung Tsangpo
At 3,969 km 2,466 mi, the Brahmaputra completes the list and takes the most dramatic line of any of them. It rises in western Tibet as the Yarlung Tsangpo and runs east for well over a thousand kilometres along the northern side of the Himalaya, then makes an abrupt hairpin turn around the eastern end of the range and drops through the Yarlung Tsangpo Grand Canyon — by several measures the deepest canyon on Earth — before emerging into Assam as a broad lowland river.
On the Indian plain it becomes something else again: a braided channel several kilometres wide in places, splitting around shifting sandbars and rebuilding them each monsoon. Majuli, one of the largest river islands in the world, sits in the middle of it. The river then crosses into Bangladesh as the Jamuna, joins the Ganges, and reaches the Bay of Bengal through the combined delta the two rivers have built — the largest in the world, and the reason the Brahmaputra matters far more to the region than its fifteenth place suggests.
FAQ: The World's Longest Rivers
What is the longest river in the world?
The Nile, at 6,650 km 4,130 mi, is the longest river in the world by the measure most reference works use. It gathers in the highlands of Rwanda, Burundi and Ethiopia, passes through Lake Victoria and meets its Blue Nile branch at Khartoum, then runs north to the Mediterranean in Egypt.
Is the Amazon longer than the Nile?
It depends on the measurement. A Brazilian-led survey in 2007 and 2008 put the Amazon at 6,992 km against 6,853 km for the Nile, reversing the order. A peer-reviewed study published in 2009 returned 7,088 km for the Nile and 6,575 km for the Amazon. Standard reference tables still place the Nile first.
How is a river's length measured?
By river-system length: from the most distant headwater, down through the named tributaries that feed the main channel, to the mouth. That convention is why the Mississippi is listed here with the Missouri at 6,275 km. Measuring only the channel that carries the name would cut it to roughly 3,766 km.
Which river carries the most water?
The Amazon, comfortably. It discharges a greater volume than any other river on Earth — more than the next several largest combined — despite ranking second on length. The Congo is second by volume. Discharge and length are separate measures, and the river that leads one rarely leads the other.
Why aren't the Ganges and the Danube on this list?
Neither is long enough. The Ganges runs about 2,500 km and the Danube about 2,850 km, both well short of the 3,969 km needed for fifteenth place. Even the Volga, the longest river in Europe, falls short at roughly 3,645 km. Fame and length are not the same thing.
Planning more of your trip? Keep exploring more world record-breakers.