| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | Diyan Hristov•Valkov |
| Used name | Diyan•Valkov |
| Born | 2 March 1977 in Varna, Varna (BUL) |
| NOC | Bulgaria |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 2020 Summer Olympics | Football (Football) | BUL |
Diyan Valkov | ||||
| Football, Men (Olympic) | Match #1 | Brazil — Mexico | Assistant Referee #2 | ||||
| Football, Men (Olympic) | Match #6 | New Zealand — Romania | Assistant Referee #2 | ||||
| Football, Men (Olympic) | Match #3 | Argentina — Egypt | Assistant Referee #2 |