The Object 277 (Объект 277) was a prototype Soviet heavy tank designed in 1957, one of the last heavy tanks to be produced by the USSR.^[1] Developed alongside its sister design, the Object 278, as well as the Object 279 and the Object 770,
Object 277 was a conventional heavy tank, armed with a powerful gun and
thickly armoured. All development was cancelled in 1960, as part of Nikita Khrushchev's wish to abandon what he deemed obsolete heavy tanks, and re-focus efforts on ATGMs.^[2]