| NMZ | |
| Type: | Open joint-stock company |
| Foundation: | 1932 |
| Location City: | Nizhny Novgorod |
| Location Country: | Russia |
| Key People: | Vasily Shupranov (General Director, since October 2011) |
| Products: | Armament (weapons and ammunition), artillery, howitzers, anti-tank guns, oil and gas fittings |
| Parent: | Almaz-Antey |
| Homepage: | Official site of JSC NMZ |
Open joint-stock company (JSC) NMZ or Nizhny Novgorod Machine-building Plant (Russian: Нижегородский машиностроительный завод|links=no) is a Russian (formerly Soviet) artillery factory in the Sormovo district of Gorky. It included the TsAKB artillery design bureau led by Vasiliy Grabin.
Currently, part of Almaz-Antey together with Almaz-Antey Branch no. 1.
Previous names for this factory include Gorky Machine-building Plant (Russian: Горьковский машиностроительный завод|links=no), All-Union Machine-building Plant New Sormovo (Russian: Союзный машиностроительный завод «Новое Сормово»|links=no, Novoje Sormovo), Joseph Stalin Factory No. 92, Artillery Factory No. 92, Zavod imeni Stalina, or ZiS.
Its products included:
In 2006 Rosenergoatom and Sevmash signed a contract for the floating nuclear power plant. NMZ produced the nuclear power plants KLT-40S for it.