Viktor: Name day
Name Day List: Viktor
| Country | Day | Month | Names |
 Sweden | 22 | January | Viktor, Vincent |
 Norway | 25 | February | Viktor, Viktoria |
 Slovakia | 26 | February | Viktor |
 Croatia | 6 | March | Koleta, Zvjezdana, Viktor |
 Estonia | 22 | March | Viktor, Viktoria |
 Finland | 22 | March | Vihtori, Viktor |
| Croatia | 30 | March | Kvirin, Viktor, Krescent, Bosiljka |
| Croatia | 12 | April | Julije, Viktor, Davorka |
 Bulgaria | 18 | April | Viktor, Victor, Victoria, Viktoriya, Vesela |
 Czechia | 28 | July | Viktor |
 Hungary | 5 | September | Viktor, Lőrinc |
 Germany | 30 | September | Viktor |
 Austria | 10 | October | Gereon, Samuel, Viktor |
| Bulgaria | 11 | November | Viktor, Viktoriya, Minka, Mincho, Mina, Minko |
Name Day List - similar names (Viktor)
| Country | Day | Month | Names |
 Lithuania | 25 | February | Margiris, Rasa, Regimantas, Viktoras |
| Czechia | 10 | March | Viktorie |
| Sweden | 12 | March | Viktoria |
| Lithuania | 10 | May | Putinas, Sangaile, Viktorina |
| Slovakia | 10 | May | Viktória |
 Latvia | 19 | June | Nils, Vaironis, Viktors |
 Greece | 11 | November | Minas, Viktoros, Victor, Vic, Vincent |
| Lithuania | 17 | November | Benedita, Getautas, Gilvile, Viktorija |
| Croatia | 22 | December | Ivan Kentijski, Viktorija |
| Hungary | 23 | December | Viktória |
| Latvia | 23 | December | Balva, Viktorija |
| Lithuania | 23 | December | Mina, Veliuona, Viktorija, Vilbutas |