Derby (/ˈdɑːrbi/ DAR-bee) is a former vintage era automobile maker based in Courbevoie, Seine, France.

[1] In this form, it became a close copy of Citroën's 5CV ("five horsepower"); at £195 for the two-seat roadster, it was competitive with the contemporary Austin Seven (£225).

[1] Shown at the 1923 Olympia Motor Show, Derby failed to gain many sales in Britain.

[1] Like other marques of the period, Derby involved themselves in motor sport, with driver Douglas Hawkes's front wheel drive Miller with Derby parts (dubbed a Derby-Miller) acting as a testbed and promotional tool; that it was driven by Gwenda Stewart did not hurt publicity, either.

[1] Nor did Stewart's results: she took a Land Speed Racing 1.5-litre class record at Montlhéry in 1930, with a mile (1.6 km) at 118.13 mph (190.11 km/h).