| Referee | Games |  |  | Cards per game |
|---|
| Volen Chinkov | 2 | 8 | 0 | 4.0 (4.0 / 0.0) | |
| Georgi Davidov | 1 | 1 | 0 | 1.0 (1.0 / 0.0) | |
| Dimitar Dimitrov | 2 | 5 | 1 | 3.0 (2.5 / 0.5) | |
| Dragomir Draganov | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Radoslav Gidzhenov | 2 | 6 | 0 | 3.0 (3.0 / 0.0) | |
| Mariyan Grebencharski | 2 | 7 | 0 | 3.5 (3.5 / 0.0) | |
| Georgi Kabakov | 2 | 12 | 1 | 6.5 (6.0 / 0.5) | |
| Todor Kirov | 1 | 5 | 0 | 5.0 (5.0 / 0.0) | |
| Kristiyan Kolev | 2 | 5 | 0 | 2.5 (2.5 / 0.0) | |
| Lyuboslav Lyubomirov | 2 | 9 | 0 | 4.5 (4.5 / 0.0) | |
| Ventislav Mitrev | 3 | 16 | 0 | 5.3 (5.3 / 0.0) | |
| Gero Piskov | 2 | 8 | 0 | 4.0 (4.0 / 0.0) | |
| Nikola Popov | 2 | 13 | 0 | 6.5 (6.5 / 0.0) | |
| Georgi Stoyanov | 1 | 2 | 1 | 3.0 (2.0 / 1.0) | |
| Martin Velikov | 1 | 5 | 0 | 5.0 (5.0 / 0.0) | |
