Terrion is the brand name of the ATM (AgroTechMash) Group, a Russian agricultural manufacturer. Founded in 1997, ATM started as a sales and marketing company representing the Kirovets series of four-wheel drive tractors. In 2003, the company expanded its offerings by introducing a line of row-crop tractors to be sold alongside the Kirovets models. In 2008, ATM and Kirovets parted ways, leading ATM to establish its own factory and launch the Terrion brand.