First League
Bulgaria
| Referee | Games |  |  | Cards per game |
|---|
| Stefan Apostolov | 5 | 27 | 4 | 6.2 (5.4 / 0.8) | |
| Volen Chinkov | 10 | 60 | 2 | 6.2 (6.0 / 0.2) | |
| Georgi Davidov | 9 | 39 | 2 | 4.5 (4.3 / 0.2) | |
| Georgi Dimitrov | 10 | 45 | 1 | 4.6 (4.5 / 0.1) | |
| Dragomir Draganov | 14 | 56 | 3 | 4.2 (4.0 / 0.2) | |
| Nedelcho Gadzhalov | 4 | 14 | 0 | 3.5 (3.5 / 0.0) | |
| Radoslav Gidzhenov | 8 | 38 | 2 | 5.1 (4.8 / 0.3) | |
| Georgi Ivanov | 7 | 22 | 0 | 3.1 (3.1 / 0.0) | |
| Georgi Kabakov | 11 | 74 | 6 | 7.2 (6.7 / 0.5) | |
| Petar Kirilov Kostadinov | 9 | 45 | 2 | 5.2 (5.0 / 0.2) | |
| Nikolay Kolev | 3 | 14 | 0 | 4.7 (4.7 / 0.0) | |
| Georgi Nikolov | 5 | 17 | 0 | 3.4 (3.4 / 0.0) | |
| Nikola Popov | 15 | 69 | 1 | 4.7 (4.6 / 0.1) | |
| Ivajilo Stoyanov | 13 | 96 | 5 | 7.8 (7.4 / 0.4) | |
| Stanislav Todorov | 12 | 58 | 3 | 5.1 (4.8 / 0.3) | |
| Stanimir Trenchev | 6 | 35 | 0 | 5.8 (5.8 / 0.0) | |
| Valdimir Valkov | 8 | 55 | 3 | 7.3 (6.9 / 0.4) | |
| Nikolay Yordanov | 11 | 73 | 3 | 6.9 (6.6 / 0.3) | |
| Valentin Zhelezov | 7 | 18 | 1 | 2.7 (2.6 / 0.1) | |
England