First League
Bulgaria
| Referee | Games |  |  | Cards per game |
|---|
| Antonio Antov | 1 | 7 | 0 | 7.0 (7.0 / 0.0) | |
| Stoyan Arsov | 9 | 40 | 2 | 4.6 (4.4 / 0.2) | |
| Volen Chinkov | 16 | 78 | 6 | 5.3 (4.9 / 0.4) | |
| Georgi Davidov | 12 | 63 | 3 | 5.6 (5.3 / 0.3) | |
| Dimitar Dimitrov | 15 | 69 | 5 | 4.9 (4.6 / 0.3) | |
| Dragomir Draganov | 14 | 43 | 5 | 3.5 (3.1 / 0.4) | |
| Krasen Georgiev | 5 | 24 | 0 | 4.8 (4.8 / 0.0) | |
| Radoslav Gidzhenov | 15 | 77 | 8 | 5.6 (5.1 / 0.5) | |
| Georgi Ginchev | 11 | 54 | 3 | 5.2 (4.9 / 0.3) | |
| Mariyan Grebencharski | 15 | 63 | 1 | 4.3 (4.2 / 0.1) | |
| Hristiyana Guteva | 4 | 17 | 1 | 4.6 (4.3 / 0.3) | |
| Georgi Kabakov | 14 | 85 | 6 | 6.5 (6.1 / 0.4) | |
| Todor Kirov | 10 | 36 | 0 | 3.6 (3.6 / 0.0) | |
| Kristiyan Kolev | 11 | 46 | 3 | 4.5 (4.2 / 0.3) | |
| Lyuboslav Lyubomirov | 12 | 56 | 2 | 4.9 (4.7 / 0.2) | |
| Martin Markov | 7 | 32 | 2 | 4.9 (4.6 / 0.3) | |
| Vasil Minev | 13 | 54 | 4 | 4.5 (4.2 / 0.3) | |
| Ventislav Mitrev | 14 | 78 | 3 | 5.8 (5.6 / 0.2) | |
| Mihael Pavlov | 6 | 29 | 1 | 5.0 (4.8 / 0.2) | |
| Gero Piskov | 8 | 44 | 5 | 6.1 (5.5 / 0.6) | |
| Nikola Popov | 16 | 78 | 3 | 5.1 (4.9 / 0.2) | |
| Denislav Stalev | 5 | 24 | 4 | 5.6 (4.8 / 0.8) | |
| Georgi Stoyanov | 9 | 34 | 3 | 4.1 (3.8 / 0.3) | |
| Stanimir Trenchev | 9 | 34 | 3 | 4.1 (3.8 / 0.3) | |
| Martin Velikov | 12 | 37 | 2 | 3.3 (3.1 / 0.2) | |
| Valentin Zhelezov | 12 | 52 | 2 | 4.5 (4.3 / 0.2) | |
England