Atommash (Russian: «Атоммаш») is a multidisciplinary engineering company located in Volgodonsk, Rostov Oblast, Russia. It was established in 1973 as a nuclear engineering corporation. Following privatization and bankruptcy in 1999, the industrial facilities of the enterprise are owned and managed by ZAO Energomash–Atommash, a part of the diversified engineering company Energomash.