The Stura di Ovada is a 32.9-kilometre (20.4 mi) stream of Liguria and Piedmont (Italy); it is the main tributary of the Orba.

The stream rises from monte Orditano (Ceranesi municipality), in the Ligurian Apennine, with the name Sturetta (little Stura).

[3] Leaving the border it flows eastward in Liguria but, not faraway from Passo del Turchino, turns North and reaches Masone and Campo Ligure receiving from the right hand its main tributaries, Rio Vezzulla and Torrente Ponzema.

A couple of kilometres downstream it enters Piedmont between Belforte Monferrato and Ovada.

[4] Stura di Ovada main tributaries are:[5] The stream is considered suitable for angling trouts.