List of Longest Rivers of the World-
| No. | Name | Length (km) | Outflow | Countries Sharing Drainage Basin |
| 1. | Nile– White-Nile –Kagera –Nyabarongo –Mwogo –Rukarara | 7,088 | Mediterranean | Ethiopia, Eritrea, Sudan, Uganda, Tanzania, Kenya, Rwanda, Burundi, Egypt, the Democratic Republic of the Congo, South Sudan |
| 2. | Amazon–Ucayali–Tambo–Ene–Mantaro | 6,992 | Atlantic Ocean | Brazil, Peru, Bolivia, Colombia, Ecuador, Venezuela, Guyana |
| 3. | Yangtze
(Chang Jiang; Long River) |
6,418 | East China Sea | China |
| 4. | Mississippi–Missouri–Jefferson–Beaverhead–Red Rock–Hell Roaring | 6,275 | Gulf of Mexico | United States (98.5%), Canada (1.5%) |
| 5. | Yenisei–Angara–Selenge–Ider | 5,539 | Kara Sea | Russia (97%), Mongolia (2.9%) |
| 6. | Yellow River
(Huang He) |
5,464 | Bohai Sea | China |
| 7. | Ob–Irtysh | 5,410 | Gulf of Ob | Russia, Kazakhstan, China, Mongolia |
| 8. | Río de la Plata–Paraná–Rio Grande | 4,880 | Río de la Plata | Brazil (46.7%), Argentina (27.7%), Paraguay (13.5%), Bolivia (8.3%), Uruguay (3.8%) |
| 9. | Congo–Chambeshi
(Zaïre) |
4,700 | Atlantic Ocean | Democratic Republic of the Congo, Central African Republic, Angola, Republic of the Congo, Tanzania, Cameroon, Zambia, Burundi, Rwanda |
| 10. | Amur–Argun–Kherlen
(Heilong Jiang) |
4,444 | Sea of Okhotsk | Russia, China, Mongolia |
| 11. | Lena | 4,400 | Laptev Sea | Russia |
| 12. | Mekong
(Lancang Jiang) |
4,350 | South China Sea | China, Myanmar, Laos, Thailand, Cambodia, Vietnam |
| 13. | Mackenzie–Slave–Peace–Finlay | 4,241 | Beaufort Sea | Canada |
| 14. | Niger | 4,200 | Gulf of Guinea | Nigeria (26.6%), Mali (25.6%), Niger (23.6%), Algeria (7.6%), Guinea (4.5%), Cameroon (4.2%), Burkina Faso (3.9%), Côte d’Ivoire, Benin, Chad |
| 15. | Brahmaputra–Tsangpo | 3,848 | Ganges | India (58.0%), China (19.7%), Nepal (9.0%), Bangladesh (6.6%), Disputed India/China (4.2%), Bhutan (2.4%) |
| 16. | Murray–Darling–Culgoa–Balonne–Condamine | 3,672 | Southern Ocean | Australia |
| 17. | Tocantins–Araguaia | 3,650 | Atlantic Ocean, Amazon | Brazil |
| 18. | Volga | 3,645 | Caspian Sea | Russia |
| 19. | Indus–Sênggê Zangbo | 3,610 | Arabian Sea | Pakistan (93%), India and China |
| 20. | Shatt al-Arab–Euphrates–Murat | 3,596 | Persian Gulf | Iraq (60.5%), Turkey (24.8%), Syria (14.7%) |
| 21. | Madeira–Mamoré–Grande–Caine–Rocha | 3,380 | Amazon | Brazil, Bolivia, Peru |
| 22. | Purús | 3,211 | Amazon | Brazil, Peru |
| 23. | Yukon | 3,185 | Bering Sea | United States (59.8%), Canada (40.2%) |
| 24. | São Francisco | 3,180 | Atlantic Ocean | Brazil |
| 25. | Syr Darya–Naryn | 3,078 | Aral Sea | Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan |
| 26. | Salween
(Nu Jiang) |
3,060 | Andaman Sea | China (52.4%), Myanmar (43.9%), Thailand (3.7%) |
| 27. | Saint Lawrence–Niagara–Detroit–Saint Clair–Saint Marys–Saint Louis–North (Great Lakes) | 3,058 | Gulf of Saint Lawrence | Canada (52.1%), United States (47.9%) |
| 28. | Rio Grande | 3,057 | Gulf of Mexico | United States (52.1%), Mexico (47.9%) |
| 29. | Lower Tunguska | 2,989 | Yenisei | Russia |
| 30. | Danube–Breg (Donau, Dunăre, Duna, Dunav, Dunaj) | 2,888 | Black Sea | Romania (28.9%), Hungary (11.7%), Austria (10.3%), Serbia (10.3%), Germany (7.5%), Slovakia (5.8%), Bulgaria (5.2%), Croatia (4.5%), Ukraine (3.8%) |
| 31. | Irrawaddy River–N’Mai River–Dulong River–Kelaoluo–Gada Qu | 2,727 | Andaman Sea | China, Myanmar |
| 32. | Zambezi
(Zambesi) |
2,693 | Mozambique Channel | Zambia (41.6%), Angola (18.4%), Zimbabwe (15.6%), Mozambique (11.8%), Malawi (8.0%), Tanzania (2.0%), Namibia, Botswana |
| 33. | Vilyuy | 2,650 | Lena | Russia |
| 34. | Araguaia | 2,627 | Tocantins | Brazil |
| 35. | Ganges–Hooghly–Padma (Ganga) | 2,620 | Bay of Bengal | India, Bangladesh, Nepal |
| 36. | Amu Darya–Panj | 2,620 | Aral Sea | Uzbekistan, Turkmenistan, Tajikistan, Afghanistan |
| 37. | Japurá (Rio Yapurá) | 2,615 | Amazon | Brazil, Colombia |
| 38. | Nelson–Saskatchewan | 2,570 | Hudson Bay | Canada, United States |
| 39. | Paraguay (Río-Paraguay) | 2,549 | Paraná | Brazil, Paraguay, Bolivia, Argentina |
| 40. | Kolyma | 2,513 | East Siberian Sea | Russia |
| 41. | Pilcomayo | 2,500 | Paraguay | Paraguay, Argentina, Bolivia |
| 42. | Upper Ob–Katun | 2,490 | Ob | Russia |
| 43. | Ishim | 2,450 | Irtysh | Kazakhstan, Russia |
| 44. | Juruá | 2,410 | Amazon | Peru, Brazil |
| 45. | Ural | 2,428 | Caspian Sea | Russia, Kazakhstan |
| 46. | Arkansas | 2,348 | Mississippi | United States |
| 47. | Colorado (western U.S.) | 2,333 | Gulf of California | United States, Mexico |
| 48. | Olenyok | 2,292 | Laptev Sea | Russia |
| 49. | Dnieper | 2,287 | Black Sea | Russia, Belarus, Ukraine |
| 50. | Aldan | 2,273 | Lena | Russia |