1978 French motorcycle Grand Prix

  1978 French Grand Prix

Race details
Race 4 of 13 races in the 1978 Grand Prix motorcycle racing season
Date	7 May 1978
Official name	Grand Prix de France[1]
Location	Circuit de Nogaro
Course	Permanent racing facility 3.120 km (1.939 mi)
500cc
Pole position Rider Johnny Cecotto Time 1:24.850 Fastest lap Rider Kenny Roberts Time 1:22.800 Podium First Kenny Roberts Second Pat Hennen Third Barry Sheene
350cc
Pole position Rider Olivier Chevallier Time 1:26.450 Fastest lap Rider Gregg Hansford Time 1:24.500 Podium First Gregg Hansford Second Kork Ballington Third Jon Ekerold
250cc
Pole position Rider Patrick Fernandez Time 1:27.690 Fastest lap Rider Gregg Hansford Time 1:25.800 Podium First Gregg Hansford Second Kenny Roberts Third Kork Ballington
125cc
Pole position Rider Thierry Espié Time 1:31.760 Fastest lap Rider Pierpaolo Bianchi Time 1:30.300 Podium First Pierpaolo Bianchi Second Eugenio Lazzarini Third Per-Edward Carlsson
Sidecar (B2A)
Pole position Rider Alain Michel Time 1:29.100 Fastest lap Rider Rolf Biland Time 1:29.600 Podium First Rolf Biland Second Alain Michel Third Mac Hobson

The 1978 French motorcycle Grand Prix was the fourth round of the 1978 Grand Prix motorcycle racing season. It took place on the weekend of 5–7 May 1978 at the Circuit de Nogaro.