The 2018 USAC P1 Insurance National Midget Championship is the 63rd season of the Midget series sanctioned by USAC. P1 Insurance becomes the new title sponsor of the series for 2018. The season will begin with the Shamrock Classic at on March 10, and will end with the Turkey Night Grand Prix at Ventura Raceway on November 22. The series will also have a non points race with the Junior Knepper 55 at Southern Illinois Center on December 15. enters the season as the defending champion.