Mad Foxes, known in Switzerland as The Mad Foxes – Feuer auf Räder (lit. 'The Mad Foxes – Wheels on Fire'), and in Spain as Los Violadores (lit. 'The Rapists'), is a 1981 Swiss–Spanish vigilante action film directed and co-written by Paul Grau, starring José Gras, Laura Premica and Eulalia "Laly" Espinet. It chronicles the rivalry between a Corvette-driving playboy and a neo-Nazi biker gang, which escalates from a futile traffic altercation to an all-out vendetta.

Mad Foxes is regarded as a quintessential example of European exploitation cinema, and has been noted for its lurid violence and disjointed plot, which initially caused producer Erwin C. Dietrich to disown it. In some countries including Switzerland and Germany, it was marketed with the subtitle Stingray 2, to tie it to the 1978 American film Stingray, which had been distributed in the region by Dietrich but is otherwise unrelated.