The BESM-6 was a Soviet computer, designed in the 1960s and in production from 1968 to 1987 in various forms.

The BESM-6 was a Soviet electronic computer, designed at the Lebedev Institute of Precision Mechanics and Computer Engineering. The design was completed in 1965, and the machine was produced from 1968 to 1987. The original version was transistor-based, but the 1980s versions used integrated circuits. It had 48-bit words, and a clock speed of 10MHz.