COSMOS 99
| Launched | 9 December 1965 |
| Flight ended | 17 December 1965 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 1817 |
| COSPAR ID | 1965-103A |
| Observing |
Launched alongside
SL-3 R/B