Daftar sungai menurut panjangnya
Daftar  50 sungai terpanjang di dunia

Pembahasan yang disebutkan di atas harus dipertimbangkan saat menggunakan data dalam tabel berikut. Untuk kebanyakan sungai, sumber yang berbeda memberikan informasi yang saling bertentangan tentang panjang sistem sungai. Informasi dalam sumber yang berbeda berada di antara tanda kurung.
| Peringkat | Nama Sungai | Panjang (km) | Daerah Aliran Sungai(km2)[butuh rujukan]  | Debit rata-rata(m3/s)[butuh rujukan]  | Muara | Negara di daerah aliran sungai [butuh rujukan]  |
| --- | --- | --- | --- | --- | --- | --- |
| 1. | Nil | 6,650 (7,088) | 3,254,555 | 2,800 | Laut Tengah | Ethiopia, Eritrea, Sudan, Uganda, Tanzania, Kenya, Rwanda, Burundi, Mesir, Republik Demokratik Kongo, Sudan Selatan |
| 2. | Amazon | 6,575 (6,992) | 7,050,000 | 209,000 | Samudra Atlantik | Brasil, Peru, Bolivia, Kolombia, Ekuador, Venezuela, Guyana |
| 3. | Yangtze | 6,300 (6,418) | 1,800,000 | 30,166 | Laut Tiongkok Timur | Tiongkok |
| 4. | Mississippi–Missouri | 6,275  | 2,980,000 | 16,792 | Teluk Meksiko | Amerika Serikat (98.5%), Kanada (1.5%) |
| 5. | Yenisei | 5,539  | 2,580,000 | 18,050 | Laut Kara | Rusia (97%), Mongolia (2.9%) |
| 6. | Sungai Kuning (Huang He) | 5,464  | 745,000 | 2,571 | Laut Bohai | Tiongkok |
| 7. | Ob–Irtysh | 5,410 | 2,990,000 | 12,475 | Teluk Ob | Rusia, Kazakhstan, Tiongkok, Mongolia |
| 8. | Río de la Plata | 4,880  | 2,582,672 | 22,000 | Río de la Plata | Brasil (46.7%), Argentina (27.7%), Paraguay (13.5%), Bolivia (8.3%), Uruguay (3.8%) |
| 9. | Kongo (Zaïre) | 4,700  | 3,680,000 | 41,800 | Samudra Atlantik | Republik Demokratik Kongo, Republik Afrika Tengah, Angola, Republik Kongo, Tanzania, Kamerun, Zambia, Burundi, Rwanda |
| 10. | Amur (Heilong Jiang) | 4,444 | 1,855,000 | 11,400 | Laut Okhotsk | Rusia, Tiongkok, Mongolia |
| 11. | Lena | 4,400  | 2,490,000 | 15,500 | Laptev Sea | Russia |
| 12. | Mekong (Lancang Jiang) | 4,350 | 810,000 | 16,000 | South China Sea | China, Myanmar, Laos, Thailand, Cambodia, Vietnam |
| 13. | Mackenzie | 4,241  | 1,790,000 | 10,300 | Beaufort Sea | Canada |
| 14. | Niger | 4,200  | 2,090,000 | 5,589 | 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–Yarlung Tsangpo | 3,969 | 712,035 | 19,800 | Gangga | India (58.0%), China (19.7%), Nepal (9.0%), Bangladesh (6.6%), Disputed India/China (4.2%), Bhutan (2.4%) |
| 16. | Murray–Darling | 3,672 | 1,061,000 | 767 | Samudra Selatan | Australia |
| 17. | Tocantins–Araguaia | 3,650 | 950,000 | 13,598 | Samudra Atlantik, Amazon | Brazil |
| 18. | Volga | 3,645 | 1,380,000 | 8,080 | Caspian Sea | Russia |
| 19. | Indus | 3,610 | 960,000 | 7,160 | Arabian Sea | Pakistan (93%), India and China |
| 20. | Shatt al-Arab–Efrat | 3,596  | 884,000 | 856 | Persian Gulf | Iraq (60.5%), Turkey (24.8%), Syria (14.7%) |
| 21. | Madeira | 3,380 | 1,485,200 | 31,200 | Amazon | Brazil, Bolivia, Peru |
| 22. | Purús | 3,211 | 63,166 | 8,400 | Amazon | Brazil, Peru |
| 23. | Yukon | 3,185 | 850,000 | 6,210 | Bering Sea | United States (59.8%), Canada (40.2%) |
| 24. | São Francisco | 3,180* (2,900) | 610,000 | 3,300 | Samudra Atlantik | Brazil |
| 25. | Syr Darya | 3,078 | 219,000 | 703 | Aral Sea | Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan |
| 26. | Salween (Nu Jiang) | 3,060 | 324,000 | 3,153 | Andaman Sea | China (52.4%), Myanmar (43.9%), Thailand (3.7%) |
| 27. | Saint Lawrence–Niagara–Detroit (Great Lakes) | 3,058 | 1,030,000 | 10,100 | Gulf of Saint Lawrence | Canada (52.1%), United States (47.9%) |
| 28. | Rio Grande | 3,057 | 570,000 | 82 | Teluk Meksiko | United States (52.1%), Mexico (47.9%) |
| 29. | Nizhnyaya Tunguska | 2,989 | 473,000 | 3,600 | Yenisei | Russia |
| 30. | Donau | 2,888* | 817,000 | 7,130 | 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. | Sungai Irrawaddy | 2,809* | 404,200* | 13,000* | Laut Andaman | China, Myanmar |
| 32. | Zambezi (Zambesi) | 2,740* | 1,330,000 | 4,880 | Mozambique Channel | Zambia (41.6%), Angola (18.4%), Zimbabwe (15.6%), Mozambique (11.8%), Malawi (8.0%), Tanzania (2.0%), Namibia, Botswana |
| 33. | Vilyuy | 2,720 | 454,000 | 1,480 | Lena | Russia |
| 34. | Araguaia | 2,704 | 358,125 | 5,510 | Tocantins | Brazil |
| 35. | Gangga (Ganga) | 2,704 | 1,024,000 | 12,037 | Bay of Bengal | India, Bangladesh, Nepal |
| 36. | Amu Darya | 2,620 | 534,739 | 1,400 | Aral Sea | Uzbekistan, Turkmenistan, Tajikistan, Afghanistan |
| 37. | Japurá (Rio Yapurá) | 2,615* | 242,259 | 6,000 | Amazon | Brazil, Colombia |
| 38. | Nelson–Saskatchewan | 2,570 | 1,093,000 | 2,575 | Hudson Bay | Canada, United States |
| 39. | Paraguay (Rio Paraguay) | 2,549 | 900,000 | 4,300 | Paraná | Brazil, Paraguay, Bolivia, Argentina |
| 40. | Kolyma | 2,513 | 644,000 | 3,800 | East Siberian Sea | Russia |
| 41. | Pilcomayo | 2,500 | 270,000 |  | Paraguay | Paraguay, Argentina, Bolivia |
| 42. | Hulu Ob–Katun | 2,490 |  |  | Ob | Russia |
| 43. | Ishim | 2,450 | 177,000 | 56 | Irtysh | Kazakhstan, Russia |
| 44. | Juruá | 2,410 | 200,000 | 6,000 | Amazon | Peru, Brazil |
| 45. | Ural | 2,428 | 237,000 | 475 | Caspian Sea | Russia, Kazakhstan |
| 46. | Arkansas | 2,348 | 505,000 (435,122) | 1,066 | Mississippi | United States |
| 47. | Colorado | 2,333 | 390,000 | 1,200 | Gulf of California | United States, Mexico |
| 48. | Olenyok | 2,292 | 219,000 | 1,210 | Laptev Sea | Russia |
| 49. | Dnieper | 2,287 | 516,300 | 1,670 | Black Sea | Russia, Belarus, Ukraine |
| 50. | Aldan | 2,273 | 729,000 | 5,060 | Lena | Russia  |