| EURO Qualifiers 1978/1979 - Appearances as Referee |  |
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| 14/11/1978 | Spain | - | Romania | 1:0 | - | - | - |
| 17/10/1979 | Germany | - | Wales | 5:1 | 1 | - | - |
| EURO Qualifiers 1978/1979 - Appearances as Referee | |
|
|
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| 14/11/1978 | Spain | - | Romania | 1:0 | - | - | - |
| 17/10/1979 | Germany | - | Wales | 5:1 | 1 | - | - |
| Complete name: | Johannes Nicolaus Ignacius Keizer |
| Born: | 06/10/1940 † 18/11/2024 |
| Place of birth: |
Volendam, 
Netherlands |
| Nationality: |
Netherlands |