Mamuru River
Location
Country	Brazil
Physical characteristics
Source
• location	Pará state
Mouth
• location	Amazonas state

Mamuru River is a river of Amazonas and Pará states in north-western Brazil.

• List of rivers of Amazonas
• List of rivers of Pará

• Brazilian Ministry of Transport

3°15′S 56°30′W / 3.250°S 56.500°W / -3.250; -56.500