The Ten Longest Rivers in the World

Ranking rivers by length involves measurement debates (source definition, tributary choice), but the consensus top ten are:

1. Nile – 6,650 km (Africa)
2. Amazon – 6,400 km (South America)
3. Yangtze – 6,300 km (China)
4. Mississippi-Missouri – 6,275 km (North America)
5. Yenisey-Angara – 5,539 km (Russia)
6. Yellow River (Huang He) – 5,464 km (China)
7. Ob-Irtysh – 5,410 km (Russia/Kazakhstan/China) *[Note: often ranked 7th; original list had Amur]*
8. Congo – 4,700 km (Africa) *[Original: 4,374 km; longer with Chambeshi source]*
9. Amur-Argun – 4,444 km (Russia/China) *[Original: 4,416 km]*
10. Lena – 4,260 km (Russia)

Note: The Mekong (4,350 km) is often 10th–12th depending on source. Lengths vary by methodology; the Nile vs. Amazon debate persists.