The Voisin C3 was an automobile that was produced between 1923 and 1927.

After the C1 was released at the 1922 Paris Salon, the replacement was introduced in 1923. It was fitted with a more powerful engine and a longer chassis with semi-elliptic rear springs in place of the original cantilevers.

As before, the car was equipped with luxury coachwork of the standard required by the wealthy and enthusiastic clientele for the fledgling marque. As well as in bare chassis form, the C3 was initially offered as a touring torpedo, a coupé limousine and a six-seater saloon.

Some fifteen long chassis C3s survive.