Kosmos 124 (Russian: Космос 124 meaning Cosmos 124) or Zenit-2 No.42 was a Soviet, first generation, low resolution, optical film-return reconnaissance satellite launched in 1966.

A Zenit-2 spacecraft, Kosmos 124 was the fortieth of eighty-one such satellites to be launched[4][5] and had a mass of 4,730 kilograms (10,430 lb).

[1] Kosmos 124 was launched by a Voskhod 11A57 rocket with serial number N15001-14,[6] flying from Site 31/6 at the Baikonur Cosmodrome.

Kosmos 124 was operated in a low Earth orbit, at an epoch of 14 July 1966, it had a perigee of 205 kilometres (127 mi), an apogee of 286 kilometres (178 mi), an inclination of 51.8°, and an orbital period of 89.4 minutes.

After eight days in orbit, Kosmos 124 was deorbited, with its return capsule descending under parachute, landing at 09:22 GMT on 22 July 1966, and recovered by Soviet force.