KB Mashinostroyeniya or KBM for short (Russian: КБ Машиностроения, КБМ, lit. 'Machine-Building Design Bureau') is a state defence enterprise, scientific and design R&D centre specialised in missile systems located in Kolomna, Moscow region, Russia. Part of Rostec state corporation.
Former names include SKB-101, SKB-GA (Russian: Специальное конструкторское бюро гладкоствольной артиллерии, СКБ ГА, lit. 'Special KB (Design Bureau) of smooth-bore artillery'). The company is also sometimes known as Kolomna Mechanical Engineering Design Bureau .