The only operational Soviet time-sharing systems are incorporated in special-purpose, fixed-application installations, most of which are intended for industrial applications of process control or management information. Despite the peculiar suitability of time-sharing to the Soviet economic system, with its heavy reliance on centralized planning and progress reporting, time-sharing research projects are noteworthy for their lack of progress, their reliance on existing, marginally suitable hardware, and their failure to solve the problem of unreliable data-transmission facilities. The report concludes that it is now propitious to bring into focus the status of existing work on time-sharing and its historical background as a prelude to assessing new work that can be expected to follow the introduction of Ryad and the implementation of projects promised in the current Five-year Plan. (Author)