| Kostadin Dyakov | |
| Fullname: | Kostadin Hristov Dyakov |
| Birth Date: | 1985 8, df=yes |
| Birth Place: | Plovdiv, Bulgaria |
| Position: | Defensive Midfielder |
| Years1: | 2004–2007 |
| Years2: | 2005 |
| Years3: | 2005–2007 |
| Years4: | 2007–2012 |
| Years5: | 2012–2013 |
| Years6: | 2014 |
| Years7: | 2014–2015 |
| Years8: | 2016 |
| Years9: | 2016–2017 |
| Years10: | 2017–2019 |
| Years11: | 2019 |
| Years12: | 2020 |
| Clubs2: | → Vihren Sandanski (loan) |
| Clubs3: | → Rodopa Smolyan (loan) |
| Clubs12: | Maritsa Plovdiv |
| Caps1: | 0 |
| Goals1: | 0 |
| Caps2: | 6 |
| Goals2: | 0 |
| Caps3: | 36 |
| Goals3: | 1 |
| Caps4: | 76 |
| Goals4: | 8 |
| Caps5: | 29 |
| Goals5: | 0 |
| Caps6: | 12 |
| Goals6: | 0 |
| Caps7: | 36 |
| Goals7: | 0 |
| Caps8: | 13 |
| Goals8: | 0 |
| Caps9: | 23 |
| Goals9: | 1 |
| Caps10: | 49 |
| Goals10: | 2 |
| Caps11: | 11 |
| Goals11: | 1 |
Kostadin Dyakov (bg|Костадин Дяков; born 22 August 1985) is a Bulgarian former footballer who played as a midfielder.
He was raised in Levski Sofia's youth teams. After that he played as a loaned footballer for Vihren Sandanski and Rodopa Smolyan.[1] He signed than with Chernomorets Burgas in June 2007 on free transfer from Levski Sofia[2] and joined on 8 October 2009 for a trial to FC Schalke 04.
On 14 July 2016, Dyakov signed with Montana.[3] He left the club in June 2017 when his contract expired.[4]
On 5 September 2017, Dyakov signed with Second League club Maritsa Plovdiv.[5]
Dyakov plays as a right or defensive midfielder.[6]