|Mission type||Optical imaging reconnaissance|
|Mission duration||8 days|
|Launch mass||4730 kg|
|Start of mission|
|Launch date||24 September 1964|
|Rocket||Vostok-2 s/n R15001-05|
|Launch site||Baikonur, Site 31/6|
|End of mission|
|Landing date||2 October 1964|
|Perigee altitude||211 km|
|Apogee altitude||264 km|
|Epoch||24 September 1964|
Kosmos 46 (Russian: Космос 46 meaning Cosmos 46) or Zenit-2 No.23 was a Soviet, first generation, low resolution, optical film-return reconnaissance satellite launched in 1964. A Zenit-2 spacecraft, Kosmos 46 was the twenty-second of eighty one such satellites to be launched and had a mass of 4,730 kilograms (10,430 lb).
Kosmos 46 was launched by a Vostok-2 rocket, serial number R15001-05, flying from Site 31/6 at the Baikonur Cosmodrome. The launch took place at 12:00 GMT on 24 September 1964, and following its successful arrival in orbit the spacecraft received its Kosmos designation; along with the International Designator 1964-059A and the Satellite Catalog Number 00885.
Kosmos 46 was operated in a low Earth orbit, on 24 September 1964, it had a perigee of 211 kilometres (131 mi), an apogee of 264 kilometres (164 mi), inclination of 51.3° and an orbital period of 89.2 minutes. On 2 October 1964, after eight days in orbit, the satellite was deorbited with its return capsule descending by parachute for recovery by Soviet forces.