The 2019 FIA World Rally Championship was the forty-seventh season of the World Rally Championship, a rallying championship recognised by the Fédération Internationale de l'Automobile (FIA) as the highest class of international rallying. Teams and crews competed in fourteen events for the World Rally Championships for Drivers, Co-drivers and Manufacturers. Crews were free to compete in cars complying with World Rally Car and Group R regulations; however, only Manufacturers competing with World Rally Cars homologated under regulations introduced in 2017 were eligible to score points in the Manufacturers' championship. The series was once again supported by the World Rally Championship-2 category at every round, which was split into 2 classifications: the World Rally Championship-2 Pro for manufacturer entries and the World Rally Championship-2 for private entries, and by the Junior World Rally Championship at selected events. The World Rally Championship-3 was discontinued in 2018.

A World Rally Car is a racing automobile built to the specific regulations set by the Fédération Internationale de l'Automobile (FIA) and designed for competition in the World Rally Championship (WRC). The cars were introduced in 1997 as a replacement for Group A regulations used in the manufacturers' championship, and were replaced by Group Rally1 in 2022.