The 2015 Red Bull Global RallyCross Championship was the fifth season of the Global RallyCross Championship. Joni Wiman was the reigning champion in the Supercars class and drove for the same team, Olsbergs MSE. 2014 GRC Lites runner-up Sebastian Eriksson stepped up to the GRC.

Global Rallycross was a rallycross series operated by businessmen Chip Pankow and Colin Dyne. The series ran for seven seasons, primarily in North America, from 2011 to 2017. It folded in early 2018, and was succeeded by the Americas Rallycross Championship.