The Mayo River lies in northern Peru and flows near the city of Moyobamba.

A picture of the Mayo River as it flows through the village of Solo
Tahuishco port on Mayo River at Moyobamba

Mayo River is also another name for Chinchipe River, that flows in the same general area.

6°25′04″S 76°16′48″W / 6.4178°S 76.2800°W / -6.4178; -76.2800