Denis: Name day
Name Day List: Denis
Name Day List - similar names (Denis)
| Country | Day | Month | Names |
 Lithuania | 15 | February | Girdene, Girdenis, Jovita, Jurgita, Vytis |
 France | 15 | May | Denise |
 Sweden | 7 | August | Denise, Dennis |
| Lithuania | 5 | September | Dingaile, Erdenis, Justina, Stanislova, Stase |
 Czechia | 11 | September | Denisa |
| Lithuania | 26 | September | Grazina, Juste, Justina, Kipras, Vydenis |
 Ukraine | 3 | October | Dennis, Denise |
 Latvia | 7 | October | Daumants, Denise, Druvvaldis |
 Austria | 6 | December | Denise, Henrike, Nikolaus |
| Lithuania | 15 | December | Gaudene, Gaudenis, Kristijona |
USA 
Slovakia