Arnold: Name day
Name Day List: Arnold
| Country | Day | Month | Names |
 Austria | 15 | January | Arnold, Maurus, Romedius |
 Poland | 19 | February | Arnold, Arnolf, Bądzisława, Gabin, Henryk, Konrad, Konrada, Leoncjusz, Manswet, Marceli |
 Hungary | 18 | June | Arnold, Levente |
 Croatia | 18 | July | Fridrik, Dalibor, Arnold, Natko |
| Poland | 18 | July | Arnold, Arnolf, Erwin, Erwina, Kamil, Karolina, Robert, Roberta, Szymon, Unisław, Wespazjan |
 Sweden | 4 | August | Arne, Arnold |
 USA | 10 | September | Anabel, Annabel, Annabella, Annabelle, Arnie, Arnold, Arnolda, Arnoldo, Pulcheria |
 Slovakia | 1 | October | Arnold |
| Poland | 9 | October | Arnold, Arnolf, Atanazja, Bogdan, Dionizjusz, Dionizy, Jan, Ludwik, Przedpełk |
 Estonia | 16 | November | Arnold, Arno, Arne, Aarne |
 Denmark | 1 | December | Arnold |
 Norway | 1 | December | Arnljot, Arnold, Arnt |
Name Day List - similar names (Arnold)
Lithuania 
Latvia