The 1978 World Rally Championship was the sixth season of the Fédération Internationale de l'Automobile (FIA) World Rally Championship (WRC).
1978 was the last season with an official world championship only for manufacturers.
Scoring was modified in 1977 to a more complex system including points both for overall and group placement.
A car would still have to place in the overall top 10 to score points.
All rallies of the WRC, in addition to another ten events, were counted towards the drivers' totals.