| 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%) |