The 2021 Portland 112 was an ARCA Menards Series West race held on September 10, 2021.

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.

Jake Drew was the fastest in practice with a time of 01:17.6 seconds and a speed of 91.266 mph (146.878 km/h).

Jake Drew collected the pole with a time of 76.042 and a speed of 93.122 mph (149.865 km/h).