Kosmos 12 (Russian: Космос 12 meaning Cosmos 12) or Zenit-2 No.6 was a Soviet optical film-return reconnaissance satellite launched in 1962. A Zenit-2 spacecraft, Kosmos 12 was the seventh of eighty-one such satellites to be launched and had a mass of 4,730.0 kilograms (10,427.9 lb).
Kosmos 12 was operated in a low Earth orbit. On 24 December 1962 it had a perigee of 199 kilometres (124 mi), an apogee of 386 kilometres (240 mi), with inclination of 64.9 degrees and an orbital period of 90.37 minutes. On 30 December 1962 the spacecraft was deorbited, with its return capsule descending by parachute for recovery.
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.