| Land | Dag | Måned | Navn |
 Polen | 4 | januar | Angelika, Aniela, Benedykta, Benita, Dobromir, Dobrymir, Eugeniusz, Grzegorz, Izabela, Leonia, Rygobert, Tytus |
 Ungarn | 4 | januar | Titusz, Leona, Angel |
 Østerrike | 10 | januar | Leonie, Paulus, Wilhelm |
| Polen | 13 | januar | Bogumił, Bogusąd, Bogusława, Godfryd, Gotfryd, Leoncjusz, Melania, Weronika |
 Italia | 14 | januar | Leonzio, Llario di Poitiers |
 Litauen | 17 | januar | Beatrice, Dovainis, Leonile, Vilda |
| Litauen | 28 | januar | Gedautas, Leonidas, Nijole |
| Polen | 28 | januar | Agnieszka, Augustyn, Flawian, Ildefons, Julian, Karol, Leonidas, Piotr, Radomir, Roger, Waleriusz |
 Hellas | 18 | februar | Leon, Agapitos |
| Polen | 19 | februar | Arnold, Arnolf, Bądzisława, Gabin, Henryk, Konrad, Konrada, Leoncjusz, Manswet, Marceli |
| Litauen | 20 | februar | Eitvyde, Leonas, Visgintas |
| Polen | 20 | februar | Euchariusz, Eustachiusz, Eustachy, Leon, Ludmiła, Ludomiła, Ostap, Siestrzewit |
 Kroatia | 21 | februar | Petar, Damir, Eleonora |
 Latvia | 21 | februar | Eleonora |
| Litauen | 21 | februar | Eleonora, Feliksas, Kestutis, Zemyna |
| Polen | 21 | februar | Eleonora, Feliks, Fortunat, Kiejstut, Teodor, Wyszeniega |
 Slovakia | 21 | februar | Eleonóra |
| Ungarn | 21 | februar | Eleonóra |
 Spania | 22 | februar | Margarita, Leonor |
| Polen | 27 | februar | Aleksander, Anastazja, Auksencjusz, Gabriel, Gabriela, Honoryna, Leander, Leonard, Sierosława |
| Østerrike | 1 | mars | Albin, Leontina, Roger |
| Hellas | 3 | mars | Kleonikos |
| Ungarn | 6 | mars | Leonóra, Inez |
| Polen | 14 | mars | Bożeciecha, Jakub, Leon, Matylda, Mechtylda, Michał |
 Czech | 22 | mars | Leona |
| Litauen | 11 | april | Daugaile, Leonas, Vykintas |
| Polen | 11 | april | Filip, Herman, Jaromir, Leon, Marek |
 USA | 11 | april | Alger, Algernon, Ari, Ariel, Arielle, Arion, Leo, Leon, Leonel, Leona, Leontine, Lionel |
| Hellas | 15 | april | Leonidas, Leo |
| Polen | 15 | april | Anastazja, Bazyli, Leonid, Ludwina, Modest, Olimpia, Tytus, Wacław, Wacława, Wiktoryn, Wszegniew |
| Litauen | 19 | april | Aiste, Eirimas, Leonas, Leontina, Simonas |
| Polen | 19 | april | Adolf, Adolfa, Adolfina, Alf, Cieszyrad, Czech, Czechasz, Czechoń, Czesław, Leon, Leontyna, Pafnucy, Tymon, Werner, Włodzimierz |
| Litauen | 22 | april | Leonas, Leonidas, Norvaide, Visgailas |
| Polen | 22 | april | Heliodor, Kajus, Leonia, Leonid, Łukasz, Soter, Strzeżymir, Teodor |
| USA | 22 | april | Caia, Caissa, Kai, Kaila, Kailey, Kaleigh, Kaley, Kay, Kayla, Kaylee, Kayleigh, Kayley, Kaylie, Kaylin, Kaylyn, Leonidas, Makayla, Mckayla |
| Østerrike | 22 | april | Alfred, Kaj, Leonidas |
| Spania | 24 | april | Leoncio, Honorio, Honoria, Fidel |
| Latvia | 23 | mai | Leontine, Ligija, Lonija |
| Polen | 23 | mai | Budziwoj, Dezyderiusz, Dezydery, Emilia, Iwona, Jan, Leontyna, Michał, Symeon |
| Litauen | 27 | mai | Augustinas, Brunonas, Leonora, Virgaudas, Zymante |
| Polen | 12 | juni | Antonina, Bazyli, Jan, Leon, Onufry, Wyszemir |
| Polen | 15 | juni | Abraham, Angelina, Bernard, Jolanta, Leona, Leonida, Nikifor, Wit, Witold, Witołd, Witolda, Witosław, Wodzisław |
 Danmark | 18 | juni | Leontius |
 Frankrike | 18 | juni | Léonce |
| Polen | 18 | juni | Efrem, Elżbieta, Gerwazy, Leonia, Marek, Marina, Paula |
 Ukraina | 18 | juni | Leon, Leo |
| Frankrike | 25 | juni | Aliénor, Eléonore, Prosper, Salomon |
| Østerrike | 25 | juni | Dorothea, Eleonora, Ella |
| Danmark | 28 | juni | Eleonora |
 Norge | 28 | juni | Lea, Leo, Leon |
| Polen | 28 | juni | Amos, Ireneusz, Józef, Leon, Paweł, Raissa, Zbrosław |
| Spania | 30 | juni | Marcial, Leonila |
| Polen | 3 | juli | Anatol, Jacek, Korneli, Leon, Miłosław, Otto |
 Estland | 8 | juli | Ellinor, Eleonoora, Leonoora, Loora, Loore, Noora, Nora |
| Litauen | 9 | juli | Algirdas, Algirde, Leonardas, Veronika |
 Finland | 11 | juli | Elli, Noora, Nelli, Eleonoora, Elea |
| Latvia | 11 | juli | Leonora, Lore, Svens, Varaidotis |
 Sverige | 11 | juli | Eleonora, Ellinor |
| Polen | 17 | juli | Aleksander, Aleksy, Andrzej, Bogdan, Dzierżykraj, Januaria, Julietta, Leon, Marceli, Marcelina, Maria Magdalena |
| Polen | 20 | juli | Czech, Czechasz, Czechoń, Czesław, Eliasz, Heliasz, Hieronim, Leon, Małgorzata, Paweł, Sewera |
| Polen | 27 | juli | Alfons, Alfonsyna, Aureli, Julia, Laurenty, Lilla, Marta, Natalia, Natalis, Pantaleon, Rudolf, Rudolfa, Rudolfina, Wszebor |
| Østerrike | 27 | juli | Berthold, Natalie, Pantaleon |
| Polen | 28 | juli | Innocenta, Innocenty, Marcela, Pantaleon, Samson, Świętomir, Wiktor, Wiktoriusz |
| Ukraina | 8 | august | Amelia, Amilian, Emil, Emily, Fedir, Theodore, Leonid |
| Polen | 12 | august | Bądzisław, Hilaria, Klara, Lech, Leonida, Piotr |
| Litauen | 15 | august | Napalys, Napoleonas, Sigita, Visvilas, Vydene |
| Polen | 15 | august | Maria, Napoleon, Stefan, Stella, Trzebimir |
| 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 | 16 | august | Leonard |
| USA | 18 | august | Aileen, Eileen, Elaina, Elaine, Eleanor, Elena, Eliana, Ella, Elle, Ellen, Ellie, Helen, Helena, Iliana, Lena, Leonora, Nell, Nellie, Nelly |
| USA | 25 | august | Dorcas, Lanard, Lennie, Lenny, Leonard, Leonardo, Tabatha, Tabitha |
| Estland | 28 | september | Leonhard, Lennart, Linnart, Linnar, Lenno |
| Finland | 28 | september | Arja, Lenni, Leon |
| Sverige | 28 | september | Lennart, Leonard |
| Kroatia | 9 | oktober | Ljudevit Bertran, Dionizije, Ivan Leon |
| Litauen | 15 | oktober | Domante, Gailiminas, Leonardas, Terese |
| USA | 19 | oktober | Cleo, Cleon, Cleopatra, Howard, Howie |
| Latvia | 20 | oktober | Leonids, Leonija |
| Ukraina | 1 | november | Kuzma, Leonard |
| Danmark | 6 | november | Leonhardus |
| Frankrike | 6 | november | Bertille, Léonard |
| Hellas | 6 | november | Leonardo |
| Italia | 6 | november | Leonardo di Noblac |
| Kroatia | 6 | november | Leonard pust., Vedran, Sever |
| Latvia | 6 | november | Leo, Leonards, Leonhards, Leons, Linards |
| Litauen | 6 | november | Asmantas, Leonardas, Vygaude |
| Norge | 6 | november | Lennart, Leonard |
| Polen | 6 | november | Feliks, Leonard, Trzebowit, Ziemowit |
| Spania | 6 | november | Leonardo |
| Østerrike | 6 | november | Christine, Leonhard, Rudolf |
| Frankrike | 10 | november | Léon, Noé |
| Italia | 10 | november | Leone I Magno |
| Kroatia | 10 | november | Leon Veliki papa, Lavoslav, Lav |
| Litauen | 10 | november | Andrius, Galvyde, Leonas, Vaisviltas |
| Polen | 10 | november | Andrzej, Lena, Leon, Ludomir, Nelly, Nimfa, Probus, Stefan |
| Polen | 16 | november | Aureliusz, Dionizy, Edmund, Gertruda, Leon, Marek, Maria, Niedamir, Otomar, Paweł, Piotr |
| Kroatia | 26 | november | Konrad, Leonardo, Dubravko |
| Polen | 26 | november | Delfin, Dobiemiest, Jan, Konrad, Konrada, Lechosław, Lechosława, Leonard, Sylwester |
| Polen | 27 | november | Damazy, Dominik, Leonard, Maksymilian, Oda, Stojgniew, Walery, Wirgiliusz |
