The Voisin C3C is an automobile that was built between 1922 and 1923.

The C3C was the short chassis sports version of the C1 which was launched at the 1921 Paris Salon. It was available in chassis form or with a factory torpedo body. It was powered by the C1 4-litre engine, slightly tuned to develop 90 bhp.

Front wheel brakes became available as an option for the 1922 model year and were fitted as standard from 1923 onwards. The factory team cars had finished in 1st, 2nd, 3rd and 5th places in the Touring car class at the 1922 Grand Prix, thanks in part to Gabriel Voisin's ingenious interpretation of the regulations regarding body width.

Some 440 C3Cs were produced before the model was superseded by the C5 in 1924.