| Kaya Köstepen | |
| Birth Date: | 12 December 1934 |
| Birth Place: | Aydın, Turkey |
| Death Place: | Istanbul, Turkey |
| Position: | Midfielder |
| Years1: | 1955–1957 |
| Years2: | 1957–1970 |
| Clubs2: | Beşiktaş |
| Caps2: | 322 |
| Goals2: | 7[1] |
| Nationalyears1: | 1958–1963 |
| Nationalteam1: | Turkey |
| Nationalcaps1: | 4 |
| Nationalgoals1: | 0 |
| Manageryears1: | 1974 |
| Managerclubs1: | Beşiktaş (interim)[2] |
Kaya Köstepen (12 December 1934 – 29 June 2011) was a Turkish football player who played club football for Altay and Beşiktaş. He was born in Aydın. He also earned four caps for the Turkey national team.
Köstepen died on 29 June 2011 in Istanbul.[1] [3]