| Europa League 1977/1978 - Appearances as Referee |  |
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| 28/09/1977 | Widzew Łódź | - | Manchester City | 0:0 | - | - | - |
| 01/11/1977 | Standard Liège | - | AEK Athen | 4:1 | - | - | - |
| Europa League 1977/1978 - Appearances as Referee | |
|
|
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| 28/09/1977 | Widzew Łódź | - | Manchester City | 0:0 | - | - | - |
| 01/11/1977 | Standard Liège | - | AEK Athen | 4:1 | - | - | - |
| Complete name: | Walter Hungerbühler |
| Born: | 09/08/1930 † 27/03/2012 |
| Place of birth: |
Switzerland |
| Residence: | St. Gallen |
| Nationality: |
Switzerland |