Matti: Name day
Name Day List: Matti
| Country | Day | Month | Names |
 Estonia | 24 | February | Mattias, Madis, Madi, Matis, Mati, Matti, Mats, Mait, Maido, Maidu, Mäido |
 Finland | 24 | February | Matias, Matti |
Name Day List - similar names (Matti)
| Country | Day | Month | Names |
 Denmark | 24 | February | Mattias |
 Norway | 24 | February | Mathias, Mats, Mattias, Mattis |
 Sweden | 24 | February | Mats, Mattias |
 USA | 24 | February | Maddison, Madison, Madisyn, Madyson, Mateo, Mathew, Mathias, Matt, Mattea, Matthew, Matthias, Mattias, Mattie, Matty, Modesto |
 Italy | 14 | May | Mattia |