Saturnalia Fossae /sætərˈneɪliə ˈfɒsə/ is a series of parallel Veneneian troughs in the northern hemisphere of the giant asteroid 4 Vesta.

It is thought to be a shock fractures resulting from the impact that created Veneneia crater, which it is concentric with.

Saturnalia Fossae, as with most Vestian features, was first observed upon the arrival of the Dawn orbiter in July 2011.

Initially, only the largest and most prominent trough was named, then called Saturnalia Fossa.

The troughs of Saturnalia Fossae are parallel and oriented northwest to southeast, at an angle of roughly 30° to the troughs of Divalia Fossae and generally concentric to the large Veneneia impact basin.