The Mania River is a river in Madagascar that flows from the central mountains of the island, emptying into the Mozambique Channel. The region of Amoron'i Mania is named from this river.

Mania River
Mania river
Location
Country	Madagascar
Region	Vakinankaratra, Menabe, Amoron'i Mania
Physical characteristics
Source	Fasina
• location	Fasina
• elevation	1,654 m (5,427 ft)
Mouth	Tsiribihina River
• location	Ankazondringitra, Menabe
• coordinates	19°48′00″S 45°27′30″E / 19.80000°S 45.45833°E / -19.80000; 45.45833
• elevation	71 m (233 ft)
Length	0.0 km (0 mi)
Basin size	7,100 km2 (2,700 sq mi)
Discharge
• average	165 m3/s

Main affluents from the left are the Ivato, Imorona, Ikoly, Menala, and Sakeny rivers, and on its right the Fitanamaria, Sakorendrika, Manandona river, Isakely and Iandratsay rivers.

There is an ongoing project of a hydroelectric power station on the Mania River, near the site of Antetezambato^[1]