Marián's name day is celebrated on March 25 in Slovakia.
Marián is a traditional masculine name popular across Central and Eastern Europe, particularly in Slovakia and Poland, but less frequently used in the USA. It originates from the Latin root *Marianus*, signifying a connection to the concept of devotion and historical linkage to the name Maria. The history of Marián shows its strength as a traditional masculine choice within Catholic cultures. This name possesses a mood that is classically elegant, strong, and deeply refined. Globally, Marián is strictly classified as a male given name, offering a resonant, traditional sound.
| Country | Day | Month | Names |
 Spain | 17 | January | Alba, Antonio, Mariana, Mariano, Alfredo |
 Ukraine | 16 | February | Marianna, Theodore |
 Italy | 18 | February | Marianna, Severa |
 Greece | 28 | February | Marianna, Kyra |
 Bulgaria | 25 | March | Blagovest, Blagovesta, Blagoi, Blaga, Blago, Blaguna, Bonka, Boncho, Marian, Mariana, Blazhe, Evangelina, Vangel, Dobri, Dobrina, Dobrinka |
 Czechia | 25 | March | Marian |
 Sweden | 4 | April | Marianne, Marlene |
 Denmark | 16 | April | Mariane |
 Poland | 30 | April | Bartłomiej, Chwalisława, Eutropiusz, Jakub, Katarzyna, Lilla, Marian |
| Sweden | 30 | April | Mariana |
| Poland | 26 | May | Beda, Filip, Marianna, Paulina, Więcemił, Wilhelmina |
| Poland | 2 | June | Efrem, Erazm, Eugeniusz, Marcelin, Maria, Marianna, Mikołaj, Nicefor, Piotr, Racisław |
| Poland | 1 | July | Aaron, Bogusław, Halina, Klarysa, Marian, Niegosława, Teobald |
 France | 9 | July | Amandine, Hermine, Iphigénie, Marianne |
| Bulgaria | 15 | August | Mara, Marian, Mariana, Maria, Mariyan, Masha, Mika, Mira, Mario, Despina, Panaiot |
 Finland | 15 | August | Marjatta, Marja, Jaana, Marianna, Marianne, Marita, Maritta, Marjaana, Marjo, Marjukka, Marjut, Jatta, Marju |
 USA | 15 | August | Madonna, Malia, Mara, Maria, Mariah, Marian, Mariana, Maribel, Marie, Marisa, Marissa, Maritza, Marla, Mary, Maryann, Mimi, Miriam, Mitzy, Molly, Napoleon, Polly |
 Slovakia | 7 | September | Marianna |
| Czechia | 8 | September | Mariana |
 Estonia | 8 | September | Mariann, Marianna, Marianne |
 Latvia | 20 | September | Guntra, Marianna |
| Poland | 11 | October | Aldona, Brunon, Burchard, Dobromiła, Emil, Emilian, Emiliusz, Germanik, Maria, Marian, Placydia |
| Poland | 17 | October | Lucyna, Małgorzata, Marian, Sulisława, Wiktor, Wiktoriusz |
 Hungary | 1 | November | Marianna |
 Norway | 21 | November | Mariann, Marianne |
| Ukraine | 10 | December | Angeline, Marian |