The 2021 Portland 112 was an ARCA Menards Series West race held on September 10, 2021. It was contested over 58—extended from 50 laps due to an overtime finish—laps on the 1.98-mile (3.19 km) road course. It was the sixth race of the 2021 ARCA Menards Series West season. David Gilliland Racing driver Taylor Gray, collected his first win of the season.