| Referee | Games |  |  | Cards per game | |
|---|---|---|---|---|---|
| Əliyar Ağayev | 2 | 3 | 0 | 1.5 (1.5 / 0.0) | |
| Javier Alberola Rojas | 1 | 5 | 0 | 5.0 (5.0 / 0.0) | |
| Mohammad Al-Emara | 2 | 9 | 0 | 4.5 (4.5 / 0.0) | |
| Mohammed Al-Hakim | 1 | 3 | 0 | 3.0 (3.0 / 0.0) | |
| Mykola Balakin | 1 | 5 | 0 | 5.0 (5.0 / 0.0) | |
| Ondřej Berka | 2 | 12 | 1 | 6.5 (6.0 / 0.5) | |
| Balázs Berke | 2 | 2 | 0 | 1.0 (1.0 / 0.0) | |
| Jérôme Brisard | 2 | 12 | 0 | 6.0 (6.0 / 0.0) | |
| John Brooks | 2 | 4 | 0 | 2.0 (2.0 / 0.0) | |
| Andrea Colombo | 3 | 13 | 0 | 4.3 (4.3 / 0.0) | |
| Nikola Dabanović | 1 | 3 | 0 | 3.0 (3.0 / 0.0) | |
| Ricardo De Burgos Bengoetxea | 1 | 2 | 0 | 2.0 (2.0 / 0.0) | |
| Oleksii Derevinskyi | 2 | 6 | 0 | 3.0 (3.0 / 0.0) | |
| Espen Eskås | 1 | 6 | 0 | 6.0 (6.0 / 0.0) | |
| Horațiu Feșnic | 2 | 11 | 2 | 6.5 (5.5 / 1.0) | |
| Vasilis Fotias | 1 | 5 | 1 | 6.0 (5.0 / 1.0) | |
| Yigal Frid | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Radoslav Gidzhenov | 2 | 14 | 0 | 7.0 (7.0 / 0.0) | |
| Jarred Gillett | 1 | 6 | 0 | 6.0 (6.0 / 0.0) | |
| Oren Grinfeld | 2 | 8 | 0 | 4.0 (4.0 / 0.0) | |
| Alejandro Hernández Hernández | 1 | 2 | 0 | 2.0 (2.0 / 0.0) | |
| Enea Jorgji | 2 | 10 | 0 | 5.0 (5.0 / 0.0) | |
| Georgi Kabakov | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Goga Kikacheishvili | 2 | 4 | 0 | 2.0 (2.0 / 0.0) | |
| Patrik Kolarić | 2 | 4 | 0 | 2.0 (2.0 / 0.0) | |
| Morten Krogh | 1 | 2 | 0 | 2.0 (2.0 / 0.0) | |
| Giorgi Kruashvili | 1 | 3 | 0 | 3.0 (3.0 / 0.0) | |
| Erik Lambrechts | 1 | 6 | 1 | 7.0 (6.0 / 1.0) | |
| Manfredas Lukjančukas | 2 | 5 | 0 | 2.5 (2.5 / 0.0) | |
| Danny Makkelie | 1 | 3 | 1 | 4.0 (3.0 / 1.0) | |
| Edgars Malcevs | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Elchin Masiyev | 2 | 13 | 0 | 6.5 (6.5 / 0.0) | |
| Martin Matoša | 2 | 8 | 0 | 4.0 (4.0 / 0.0) | |
| Halil Meler | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Miloš Milanović | 2 | 11 | 2 | 6.5 (5.5 / 1.0) | |
| Nenad Minaković | 1 | 6 | 0 | 6.0 (6.0 / 0.0) | |
| Michal Očenáš | 1 | 2 | 1 | 3.0 (2.0 / 1.0) | |
| Michael Oliver | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Harm Osmers | 1 | 5 | 0 | 5.0 (5.0 / 0.0) | |
| Igor Pajač | 1 | 1 | 0 | 1.0 (1.0 / 0.0) | |
| Anastasios Papapetrou | 2 | 12 | 0 | 6.0 (6.0 / 0.0) | |
| Jérémie Pignard | 1 | 5 | 0 | 5.0 (5.0 / 0.0) | |
| João Pinheiro | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Paweł Raczkowski | 1 | 6 | 0 | 6.0 (6.0 / 0.0) | |
| Urs Schnyder | 1 | 3 | 1 | 4.0 (3.0 / 1.0) | |
| Sascha Stegemann | 1 | 3 | 0 | 3.0 (3.0 / 0.0) | |
| Damian Sylwestrzak | 2 | 8 | 0 | 4.0 (4.0 / 0.0) | |
| Sander van der Eijk | 1 | 4 | 0 | 4.0 (4.0 / 0.0) | |
| Jasper Vergoote | 2 | 5 | 0 | 2.5 (2.5 / 0.0) | |
| Lawrence Visser | 1 | 6 | 0 | 6.0 (6.0 / 0.0) | |