The Tapoa River is a tributary of the Niger River. It flows through the Tapoa Province in Burkina Faso and forms a small part of the international border between Burkina Faso and Niger, after which it flows into the Niger River in southwestern Niger.

West Burkina Faso with the Tapoa in the Center right

12°32′54″N 2°31′21″E / 12.54833°N 2.52250°E / 12.54833; 2.52250