Flumini Mannu

39°15′48″N 9°00′38″E / 39.2633°N 9.0105°E / 39.2633; 9.0105Length42 km (26 mi)Basin featuresProgressionStagno di Cagliari→ Tyrrhenian Sea

The Flumini Mannu is a river in southern Sardinia, Italy.

Its springs are located in the hills east of Sardara. It flows into the Stagno di Cagliari after a course of 42.14 kilometres (26.18 mi). The river's main tributaries are the Riu Bellu and the Rio Sitzerri, which for most of the basin of Monte Linas massif's waters.^{[clarification needed]}