The Voisin C2 was a protype vehicle built by Gabriel Voisin between 1920 and 1921.

The C2 was Gabriel Voisin's first attempt to construct a car entirely of his own design and he was by no means a man to do things by halves. The C2 was fitted with a 7,238cc V12  which was a double sleeve valve unit. This engine struggled to produce much more than 80bhp in early tests.

With a 3.82m wheelbase, the 4.78m underslung chassis was as technically advanced as the engine and uniquely among Voisins, it was left-hand drive.

The prohibitive production and development costs of such a complex power unit proved beyond the company's resources at the time, although a second running chassis (right-hand drive this time) was constructed for display at the 1921 Paris Show to showcase the marque's engineering sophistication.

The C2 was never developed beyond the prototype stage.