COSMOS 100
| Launched | 16 December 1965 |
| Flight ended | 14 February 2002 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 1843 |
| COSPAR ID | 1965-106A |
| Observing |
Launched alongside
SL-3 R/B