Kosmos 50 (Russian: Космос 50 meaning Cosmos 50) or Zenit-2 No.24 was a Soviet, first generation, low resolution, optical film-return reconnaissance satellite launched in 1964.

A Zenit-2 spacecraft, Kosmos 50 was the twenty-fourth of eighty-one such satellites to be launched[4] and had a mass of 4,730 kilograms (10,430 lb).

Kosmos 50 was launched by a Vostok-2 rocket, serial number R15002-02,[5] flying from Site 31/6 at the Baikonur Cosmodrome.

On 5 November 1964, after eight days in orbit, an attempt was made to deorbit the satellite so that its photographs could be developed and analysed.

After its retrorockets failed to fire, the satellite was commanded to self-destruct to ensure it could not fall into enemy hands.