GM (Russian: Gusenichnaya Machina, Гусеничная машина) is a series of tracked vehicle chassis. Generally, the series is produced by Metrovagonmash (former Mytyschinskiy Mashinostroitelniy Zavod, MMZ), part of the Transmashholding since 2002. Some older series were developed and produced by Minsk Tractor Works (MTZ)