| Kostadin Blagoev | |
| Birth Date: | 16 February 1927 |
| Birth Place: | Sofia, Kingdom of Bulgaria |
| Position: | Midfielder |
| Nationalteam1: | Bulgaria |
| Nationalyears1: | 1948–1957 |
| Nationalcaps1: | 5 |
| Nationalgoals1: | 0 |
Kostadin Blagoev (born 16 February 1927) was a Bulgarian footballer. He played in five matches for the Bulgaria national football team from 1948 to 1957.[1] He was also part of Bulgaria's squad for the 1952 Summer Olympics, but he did not play in any matches.[2]