here are the top 10 longest rivers in the world, listed by their approximate lengths:

Nile River: Africa - Approximately 6,650 km (4,130 miles)

Amazon River: South America - Approximately 6,575 km (4,086 miles)

Yangtze River (Chang Jiang): China - Approximately 6,300 km (3,917 miles)

Mississippi River: North America - Approximately 6,275 km (3,902 miles)

Yenisei River: Russia - Approximately 5,539 km (3,445 miles)

Yellow River (Huang He): China - Approximately 5,464 km (3,395 miles)

Ob River: Russia - Approximately 5,410 km (3,364 miles)

Parana River: South America - Approximately 4,880 km (3,030 miles)

Congo River: Africa - Approximately 4,700 km (2,922 miles)

Amur River: Russia/China - Approximately 4,444 km (2,761 miles)

river lengths can vary due to changes in course and measurement methods. The lengths provided here are approximate figures, and there might be slight variations in different sources.