The World's Five Longest Rivers: Nile, Amazon, Yangtze, Mississippi, Yenisey

Ranking by Length (Source to Mouth)

River length measurements vary slightly by source definition, but the consensus top five are:

1. Nile River (Africa) — **6,650 km (4,130 mi)**
   Source: Kagera River (Burundi/Rwanda) → Lake Victoria → White Nile + Blue Nile → Mediterranean. Drains 11 countries.
2. Amazon River (South America) — **6,400 km (3,976 mi)**
   Source: Apurímac (Peru) → Atlantic. **Largest by discharge** (209,000 m³/s) & basin (7M km²). Length debated; some argue longer than Nile.
3. Yangtze River / Chang Jiang (Asia/China) — **6,300 km (3,915 mi)**
   Source: Tibetan Plateau (Geladandong) → East China Sea at Shanghai. **Longest entirely within one country**. Three Gorges Dam.
4. Mississippi River System (North America) — **6,275 km (3,902 mi)**
   Source: Lake Itasca (MN) → Gulf of Mexico. **With Missouri River** (longest tributary). Drains 32 US states + 2 Canadian provinces.
5. Yenisey River (Asia/Russia) — **5,539 km (3,445 mi)**
   Source: Mongolia (Selenge) → Lake Baikal → Angara → Yenisey → Kara Sea (Arctic). Largest Arctic river.

Honorable Mentions (6–10)

• Yellow River / Huang He (5,464 km)
• Ob–Irtysh (5,410 km)
• Paraná (4,880 km)
• Congo (4,700 km) — **deepest**, 2nd discharge
• Amur–Argun (4,444 km)

Why Length Matters

Length correlates with basin size, biodiversity, human dependency, and geopolitical complexity. The top five sustain billions of people and irreplaceable ecosystems.