Military Institute of Armament Technology (Polish: Wojskowy Instytut Techniczny Uzbrojenia; WITU) is a Polish scientific institution responsible for the research and development of new technologies for use by the military.

As one of the principal centres for research and development of weapons, the ITU was responsible for a number of successful designs introduced in the Polish Army of the epoch.

In the thirties col. Stanisław Witkowski was the commandant of the Military Institute of Armament Technology.

Among the best-known weapons designed by the WITU were PM-84 Glauberyt SMG, numerous pistols including P-83 Wanad and WIST-94, RPG-76 Komar AT grenade launcher and AHS Krab SP howitzer, as well as most post-war Polish helmet designs, including the Hełm wz.

It also customised numerous types of foreign (mostly Soviet) technology for local production, including the ZU-23-2 AA autocannon.