Gregor: Name day
Name Day List: Gregor
| Country | Day | Month | Names |
 Austria | 2 | January | Basilius, Dietmar, Gregor |
| Austria | 12 | February | Benedikt, Eulalia, Gregor |
 Norway | 12 | March | Gregor, Gro |
 Slovakia | 12 | March | Gregor |
| Austria | 25 | May | Beda, Gregor, Magdalene |
| Austria | 26 | August | Gregor, Miriam, Teresa |
| Austria | 3 | September | Gregor, Silvia, Sophie |
 Germany | 3 | September | Gregor |
Name Day List - similar names (Gregor)
| Country | Day | Month | Names |
 Spain | 2 | January | Gregorio, Astrid, Basilio, Emma |
 Greece | 25 | January | Grigorios, Gregory, Margarita |
 Ukraine | 30 | January | Gregory, Zenon, Zenonia, Zenia |
 Denmark | 12 | March | Gregorius |
 Latvia | 12 | March | Aija, Aiva, Aivis, Ausmins, Gregors |
 USA | 12 | March | Graig, Grayson, Greg, Gregoria, Greorgio, Gregory, Orion |
| Spain | 9 | May | Gregorio, Hermas, Geroncio |
 Italy | 18 | June | Gregorio Barbarigo |
| Italy | 3 | September | Gregorio I Magno |
| Greece | 14 | November | Philip, Gregory, Filio |
| Italy | 10 | December | Gregorio III |