The 2018 Speed Energy Stadium Super Trucks Series was the sixth season of the Stadium Super Trucks series. The season consisted of 20 races; it began on January 27, 2018 at Lake Elsinore Diamond and concluded on January 20, 2019 at Foro Sol in conjunction with the 2019 Race of Champions.
With a series-high six wins and 540 total points, Matthew Brabham won his first championship. Gavin Harlien finished second in the standings with 490 points and five wins.