Kosmos 16 (Russian: Космос 16 meaning Cosmos 16) or Zenit-2 No.10 was a Soviet optical film-return reconnaissance satellite which was launched in 1963. A Zenit-2 satellite, Kosmos 16 was the tenth of eighty-one such spacecraft to be launched and had a mass of 4,730.0 kilograms (10,427.9 lb).
Kosmos 16 was operated in a low Earth orbit. On 30 April 1963 it had a perigee of 195 kilometres (121 mi), an apogee of 384 kilometres (239 mi), with inclination of 65 degrees and an orbital period of 90.3 minutes. A malfunction of the spacecraft's attitude control system resulted in the satellite being able to return only some of the images which it had been programmed to produce. After ten days in orbit, the spacecraft was deorbited on 8 May 1963. Its return capsule descended under parachute and was recovered by Soviet forces.
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.