Polyus (Russian: Полюс) is a research institute and production association in Moscow, Russia.

[2] NPO Polyus produces lasers and associated components, electronics articles, and electrovacuum devices.

[2] NII Polyus works in the field of quantum electronics and develops and manufactures experimental models in the areas of cryoelectronics, magnetism, and electrovacuum devices.

[2] The Polyus Scientific Research Institute was established in 1962 on the initiative of Mitrofan Fedorovich Stelmakh, a scientist and specialist in the field of superhigh frequency technology.

The objectives of the institute were to develop quantum electronics devices for military purposes, medical equipment, and other applications.