Jaan: Name day
Name Day List: Jaan
| Country | Day | Month | Names |
 Estonia | 24 | June | Johannes, Johan, Juhan, Juho, Jaan, Jan, Kanek, Janno, Jukk, Juss, Hannes, Annes, Hans, Ants |
Name Day List - similar names (Jaan)
| Country | Day | Month | Names |
| Estonia | 15 | August | Johanna, Hanna, Jaana, Jaanika, Jana, Janika, Janne, Jenny, Nanna |
 Finland | 15 | August | Marjatta, Marja, Jaana, Marianna, Marianne, Marita, Maritta, Marjaana, Marjo, Marjukka, Marjut, Jatta, Marju |
| Estonia | 22 | October | Ihan, Ihanus, Jaanus, Jaano, Hannus, Hanno, Annus, Anno, Delia |