| River | Source | Length (Miles) | Course & Outflow |
| Nile | Kagera River, Burundi | 4145 | Tanzania, Uganda, Sudan, Egypt to eastern Mediterranean. |
| Amazon | Apurimac River, Peru | 4007 | Colombia to Brazil to South Atlantic (Canal do Sul). |
| Missouri-Mississippi | Jefferson (Red Rock) River Montana | 3710 | N and S Dakota, Nebraska, Iowa, Missouri, Kansas, Illinois, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana to Gulf of Mexico. Although the Missouri is a tributary of the Mississippi, it is also an extension via Lake Itasca, so the system is made up of the total length of the Missouri and 1395 miles of the Mississippi. |
| Yenisey | Selenga River, Mongolia | 3442 | Flows due north through central Russia to the Kara Sea. |
| Yangtze (Chang-Yian) | Kunlun Mts, China | 3436 | Flows in an easterly course across China to the East China Sea near Shanghai. |
| Yellow River (Huang Ho) | Qinghai, China | 3395 | Flows north of the Yangtze in an easterly course to the Yellow Sea. |
| Ob'-Irtysh | Altai Mts, Russia | 3361 | Northern course touching Kazakhstan and through Russia to Kara Sea. |
| parana | Paranaiba abd Grande confluence, Brazil | 3032 | Flows south via Paraguay border and Argentina into confluence with River Uruguay to the Rio de la Plata (River Plate) estuaryin the South Atlantic near Buenos Aires. The system is aka Rio de la Plata-Parana. |
| Zaire (Congo) | Chambeshi River, Zambia | 2920 | Called Lualaba in Dem Rep of Congo. Runs along Congo border into Atlantic at Angola. |
| Amur-Argun | Russia, Khingan range, China | 2782 | Tatar Strait of the Pacific Ocean, it joins at the confluence of the Shilka. |
| Lena | Kirenga River, Siberia | 2734 | Russia and northward to Laptev Sea in the Arctic Ocean. |
| Mackenzie-Peace | Finlay, Parsnip confluence, BC | 2635 | Flows eastwards to Alberta and then north via NWT to Beaufort Sea. The system is linked by the Slave River between Lake Athabasca and the Great Slave Lake. |
| Mekong | Lants'ang, Tibet | 2600 | China, Burma, Laos, Thailand, Cambodia, Vietnam to South China Sea. |
| Niger | Loma Mts, Guinea | 2590 | Flows through Mali, Niger and along Benin border into Nigeria before discharging into the Gulf of Guinea in the Atlantic. |
| Murray-Darling | New England Plateau, NSW, Queensland | 2330 | Follows the NSW, Queensland border into Victoria, bends south at Morgan, South Australia and discharges into the Indian Ocean at Encounter. |
| Zambesi | Kalene Hill, Zambia | 2200 | Flows south across Angola and western Zambia, then north-eastward forming the border between Zambia and Zimbabwe, and finally south-eastward across Mozambique to its delta on the Indian Ocean. |
| Volga | Valdai Hills, nr Moscow | 2193 | Flows generally south-eastward to discharge into the Caspian Sea in Russia. The Volga is considered the longest river in Europe as the longer Russian rivers flow east of the Urals which are considered the boundary to Asia. |
| Madeira | Namore and Beni Rivers, Bolivia | 2082 | Joins the Amazon 90 miles east of Manaus, it is the 2nd longest tributary in the world. |
| Jurua | Puerto Portillo, Peru | 2040 | Flows east and north into Brazil before joining the Amazon south of Fonte Boa. |
| Purus | Loreto Department, Peru | 1995 | Flows north and east into Brazil to join the Amazon upstream from Manaus (Solimoes River). |
A usual definition of a river might be a 'freshwater channelled body of water that flows from its source into another river, a lake, the sea, or an inland desert', in which case the Missouri and Mississippi Rivers would make the above listing as seperate entries. However, the table above includes the system as a whole.
