The Dewoitine D.500 was an all-metal, open-cockpit, fixed-undercarriage monoplane fighter aircraft designed and produced by French aircraft manufacturer Dewoitine.
Ordered by the French Air Force during November 1933 and introduced in its initial model during 1935, the design was developed into several variants, most notably the D.510, which was re-engined with a 640 kW (860 hp) Hispano-Suiza 12Ycrs and armed with a 20 mm (0.79 in) Hispano cannon and 2 × 7.5 mm (0.30 in) MAC 1934 machine guns in the wings. Its first flight was on 14 August 1934, 120 were built.
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