| | Austria (2) |
|---|
| LASK Linz, | | Rapid Wien, |
| | Bielorussia (1) |
|---|
| Dinamo Minsk, |
| | Belgio (2) |
|---|
| AA Gent, | | Cercle Brugge, |
|
| Bosnia-Erzegovina (1) |
|---|
| FK Borac Banja Luka, |
| | Cipro (3) |
|---|
| APOEL Nicosia, | | Omonia Nicosia, | | Pafos FC, |
| | Repubblica Ceca (1) |
|---|
| Mladá Boleslav, |
| | Danimarca (1) |
|---|
| FC København, |
|
| | Finlandia (1) |
|---|
| HJK Helsinki, |
| | |
| Islanda (1) |
|---|
| Víkingur Reykjavík, |
| | Irlanda (1) |
|---|
| Shamrock Rovers, |
| | |
| Moldavia (1) |
|---|
| Petrocub Hincesti, |
| | Irlanda del Nord (1) |
|---|
| Larne FC, |
| | | Polonia (2) |
|---|
| Jagiellonia, | | Legia Warszawa, |
|
| Portogallo (1) |
|---|
| Vitória Guimarães, |
| | | Serbia (1) |
|---|
| TSC Backa Topola, |
| | Slovenia (2) |
|---|
| NK Celje, | | Olimpija Ljubljana, |
|
| | Svezia (1) |
|---|
| Djurgardens IF, |
| | Svizzera (2) |
|---|
| FC Lugano, | | FC St. Gallen, |
| | Turchia (1) |
|---|
| Istanbul Başakşehir, |
|
| Galles (1) |
|---|
| The New Saints, |
|