Mene oblonga is a species of ray-finned fish that first appeared in the Monte Bolca Lagerstatten during the Lutetian epoch of the Eocene.

For a menid, it has a very shallow body, especially in comparison with the sympatric Mene rhombea.

Its fossils are very rare in Monte Bolca.

A single fossil from the early Oligocene, referred to as "Mene oblonga var.

This article about a prehistoric ray-finned fish is a stub.