| Europa League 2011/2012 - Appearances as Referee |  |
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| 22/02/2012 | Manchester City | - | FC Porto | 4:0 | 3 | 1 | - |
| 29/03/2012 | Sporting CP | - | Metalist Kharkiv | 2:1 | 6 | - | - |
| 09/05/2012 | Atlético Madrid | - | Athletic Bilbao | 3:0 | 5 | - | - |
| Europa League 2011/2012 - Appearances as Referee | |
|
|
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| 22/02/2012 | Manchester City | - | FC Porto | 4:0 | 3 | 1 | - |
| 29/03/2012 | Sporting CP | - | Metalist Kharkiv | 2:1 | 6 | - | - |
| 09/05/2012 | Atlético Madrid | - | Athletic Bilbao | 3:0 | 5 | - | - |
| Complete name: | Wolfgang Stark |
| Born: | 20/11/1969 |
| Place of birth: |
Landshut, 
Germany |
| Residence: | Ergolding |
| Nationality: |
Germany |
| Profession: | Bankkaufmann |
| Club: | DJK Altdorf |
| Height: | 190 cm |
| Weight: | 83 kg |
| Bundesliga (GER) appearances: | 344 |