First League
Bulgaria
| Referee | Games |  |  | Cards per game |
|---|
| Stefan Apostolov | 5 | 27 | 4 | 6.2 (5.4 / 0.8) | |
| Volen Chinkov | 9 | 51 | 1 | 5.8 (5.7 / 0.1) | |
| Georgi Davidov | 8 | 34 | 2 | 4.6 (4.3 / 0.3) | |
| Georgi Dimitrov | 9 | 40 | 1 | 4.5 (4.4 / 0.1) | |
| Dragomir Draganov | 12 | 49 | 3 | 4.4 (4.1 / 0.3) | |
| Nedelcho Gadzhalov | 4 | 14 | 0 | 3.5 (3.5 / 0.0) | |
| Radoslav Gidzhenov | 8 | 38 | 2 | 5.1 (4.8 / 0.3) | |
| Georgi Ivanov | 6 | 18 | 0 | 3.0 (3.0 / 0.0) | |
| Georgi Kabakov | 11 | 74 | 6 | 7.2 (6.7 / 0.5) | |
| Petar Kirilov Kostadinov | 8 | 39 | 2 | 5.2 (4.9 / 0.3) | |
| Nikolay Kolev | 2 | 8 | 0 | 4.0 (4.0 / 0.0) | |
| Georgi Nikolov | 4 | 16 | 0 | 4.0 (4.0 / 0.0) | |
| Nikola Popov | 15 | 69 | 1 | 4.7 (4.6 / 0.1) | |
| Ivajilo Stoyanov | 12 | 90 | 5 | 7.9 (7.5 / 0.4) | |
| Stanislav Todorov | 12 | 58 | 3 | 5.1 (4.8 / 0.3) | |
| Stanimir Trenchev | 5 | 26 | 0 | 5.2 (5.2 / 0.0) | |
| Valdimir Valkov | 7 | 50 | 3 | 7.5 (7.1 / 0.4) | |
| Nikolay Yordanov | 11 | 73 | 3 | 6.9 (6.6 / 0.3) | |
| Valentin Zhelezov | 6 | 16 | 1 | 2.9 (2.7 / 0.2) | |
England