Märt’s name day is November 10 in Estonia.
Märt is a name primarily found in Estonia and among Estonian diaspora communities, with extremely limited usage in the United States. It’s a masculine name with origins in the Latin Martinus, derived from Mars, the Roman god of war. Historically, it spread through Europe, adapting to local languages, becoming Märt in Estonian. The name evokes a sense of quiet strength, dependability, and a connection to nature. Its rarity contributes to its distinctive character, and it remains a culturally significant name within Estonia. It’s a name that feels both traditional and grounded.
| Country | Day | Month | Names |
 USA | 15 | January | Deidre, Deirdre, Deja, Marten, Martin, Marty |
 Austria | 19 | January | Agritius, Marius, Martha, Pia |
 Croatia | 19 | January | Mario, Ljiljana, Marta |
 Poland | 19 | January | Andrzej, Bernard, Erwin, Erwina, Eufemia, Henryk, Kanut, Mariusz, Marta, Matylda, Mechtylda, Pia, Racimir, Sara |
| Poland | 22 | January | Anastazy, Dobromysł, Gaudencjusz, Gaudenty, Marta, Wincenty |
 Spain | 29 | January | Valeria, Valerio, Martina |
| Austria | 30 | January | Adelgunde, Martina |
| Croatia | 30 | January | Martina, Tina, Gordana |
 France | 30 | January | Jacinthe, Martine |
 Germany | 30 | January | Martina |
 Hungary | 30 | January | Martina, Gerda |
| Poland | 30 | January | Adelajda, Feliks, Gerard, Gerarda, Gerhard, Hiacynta, Maciej, Marcin, Martyna, Sebastian |
| USA | 30 | January | Franklin, Franklyn, Freeman, Fremont, Marteena, Martina, Martine |
 Italy | 31 | January | Martina |
 Romania | 13 | February | Acvila, Evloghie, Martinian, Priscila |
 Bulgaria | 1 | March | Evdokiya, Marta, Martin, Martina, Boiko, Boyko |
 Latvia | 3 | March | Marts, Matejs, Matiss, Talis |
| Italy | 19 | March | Edoardo il martire |
| Austria | 13 | April | Hermenegild, Ida, Martin |
| Croatia | 13 | April | Uskrsni ponedjeljak, Martin I., Ida |
| Italy | 13 | April | Martino I |
| Spain | 13 | April | Martín, Hermenegildo |
| Bulgaria | 14 | April | Martin, Martina |
 Ukraine | 14 | April | Martin |
| Poland | 27 | April | Anastazy, Andrzej, Bożebor, Kanizjusz, Martyn, Piotr, Teofil, Zyta |
 Denmark | 29 | April | Peter martyr |
 Sweden | 11 | May | Märit, Märta |
| Bulgaria | 4 | June | Marta, Panaiot, Ruslan |
 Greece | 4 | June | Martha |
| Ukraine | 4 | June | Martha |
| Poland | 21 | June | Albaniusz, Alicja, Alojza, Alojzy, Demetria, Domamir, Marta, Rudolf, Rudolfa, Rudolfina, Teodor |
| France | 30 | June | Adolphe, Martial |
| France | 2 | July | Martinien |
| Poland | 2 | July | Juda, Maria, Martynian, Otto, Piotr, Urban |
| Spain | 2 | July | Visitación, Martiniano, Vidal, Teodorico, Teobaldo |
 Czechia | 17 | July | Martina |
 Finland | 26 | July | Martta |
| Denmark | 27 | July | Martha |
 Estonia | 27 | July | Marta, Marve, Marvi |
| Latvia | 27 | July | Dita, Mariona, Marta |
| Poland | 27 | July | Alfons, Alfonsyna, Aureli, Julia, Laurenty, Lilla, Marta, Natalia, Natalis, Pantaleon, Rudolf, Rudolfa, Rudolfina, Wszebor |
| Sweden | 27 | July | Marta |
| Austria | 29 | July | Ladislaus, Martha, Olaf |
| Croatia | 29 | July | Marta, Blaženka |
| Czechia | 29 | July | Marta |
| France | 29 | July | Beatrix, Loup, Marthe |
| Hungary | 29 | July | Márta, Flóra |
| Italy | 29 | July | Marta |
| Poland | 29 | July | Beatrice, Beatrycze, Beatryks, Cierpisław, Faustyn, Konstantyn, Lucylla, Maria, Marta, Olaf, Serafina, Urban |
 Slovakia | 29 | July | Marta |
| Spain | 29 | July | Marta, Olavo |
| USA | 29 | July | Bea, Beatrice, Beatriz, Beattie, Marta, Martha, Olaf, Serafina, Trixie |
| Bulgaria | 14 | August | Martin |
| Italy | 29 | August | Giovanni Battista (martirio) |
| Slovakia | 9 | September | Martina |
 Norway | 17 | October | Marta, Marte |
| Norway | 25 | October | Margrete, Merete, Märtha |
| Romania | 25 | October | Marcian, Martirie |
| Austria | 3 | November | Hubert, Martin, Pirmin, Rupert |
| Croatia | 3 | November | Martin de Porres, Hubert |
| Finland | 10 | November | Martti, Martin |
| Latvia | 10 | November | Erasts, Marcis, Martins |
| Sweden | 10 | November | Martin, Martina |
| Austria | 11 | November | Martin, Menas, Senta |
| Croatia | 11 | November | Martin biskup |
| Czechia | 11 | November | Martin |
| France | 11 | November | Martin, Vérane |
| Germany | 11 | November | Martin |
| Hungary | 11 | November | Márton |
| Italy | 11 | November | Martino di Tours |
 Lithuania | 11 | November | Anastazija, Martynas, Milvyde, Naste, Vygintas |
| Norway | 11 | November | Martin, Martine, Morten |
| Slovakia | 11 | November | Martin |
| Spain | 11 | November | Martín |
| Sweden | 11 | November | Mårten |