| 1. československá fotbalová liga 1990/1991 - Appearances as Referee |  |
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| 18/08/1990 | FC Nitra | - | TJ Inter Slovnaft Bratislava | 3:0 | 2 | - | - |
| 09/09/1990 | FC Zbrojovka Brno | - | SK Sigma MŽ Olomouc | 0:4 | 3 | - | - |
| 04/12/1990 | Slovan Bratislava | - | TJ Vítkovice | 3:0 | 2 | 1 | - |
| 1. československá fotbalová liga 1990/1991 - Appearances as Referee | |
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|
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| 18/08/1990 | FC Nitra | - | TJ Inter Slovnaft Bratislava | 3:0 | 2 | - | - |
| 09/09/1990 | FC Zbrojovka Brno | - | SK Sigma MŽ Olomouc | 0:4 | 3 | - | - |
| 04/12/1990 | Slovan Bratislava | - | TJ Vítkovice | 3:0 | 2 | 1 | - |
| Complete name: | Ivan Grégr |
| Born: | 21/05/1942 |
| Place of birth: |
Praha, 
CSSR |
| Residence: | Praha |
| Nationality: |
Czech Republic |
| Profession: | Mechaniker |
| Club: | Karriereende |