The 2018 FIA WRC2 Championship was the sixth season of WRC2, a rallying championship organised and governed by the Fédération Internationale de l'Automobile, running in support of the World Rally Championship. The championship was open to cars complying with R4, R5, and Super 2000 regulations.
Pontus Tidemand and Jonas Andersson were the defending drivers' and co-drivers' champions. à  koda Motorsport were the defending teams' champions. Although à  koda Motorsport went on to win the teams' championship for the third year in a row, Jan Kopecký and Pavel Dresler succeeded for the drivers' and co-drivers' titles defeating the former champions.
The 2018 season saw several new car models become available for competition:
The following teams and crews were entered in the 2018 FIA WRC2 Championship:
Points were awarded to the top ten classified finishers in each event. Six best results counted towards championship.