Helmut Niedermayr (29 November 1915 – 3 April 1985) was a racing driver from Germany. He participated in one World Championship Grand Prix, on 3 August 1952, scoring no championship points.

Niedermayr finished second with Theo Helfrich at the 1952 24 Hours of Le Mans, but a few weeks later he crashed into the crowd during a race at the Grenzlandring, killing at least 13 spectators and injuring 42.

Complete Formula One World Championship results (key) Year Entrant Chassis Engine 1 2 3 4 5 6 7 8 WDC Points 1952 Helmut Niedermayr AFM 6 BMW Straight-6 SUI 500 BEL FRA GBR GER NED ITA NC 0

24 Hours of Le Mans results YearTeamCo-DriversCarClassLaps Daimler-Benz A.G. Theo HelfrichMercedes-Benz W194S 3.02762nd2nd

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