1 April | Austria | Hugo, Irene, Irina | Croatia | Anastazije, Božica, Mavro, Venancije | Czechia | Hugo | Denmark | Hugo | Estonia | Harald, Harri, Harro, Herald | Finland | Peppi, Pulmu, Raita | France | Hugues, Valéry | Hungary | Hugó | Italy | Ugo | Latvia | Dagne, Dagnis, Tautmilis, Teodora, Teofils | Lithuania | Dainora, Rimgaudas, Teodora | Norway | Aron, Arve, Arvid | Poland | Chryzant, Grażyna, Hugo, Hugon, Katarzyna, Teodora, Tolisław, Zbigniew, Zbyszko | Romania | Maria | Russia | Darya, Klavdia | Slovakia | Hugo | Spain | Hugo, Venancio | Sweden | Harald, Hervor |
|
|
2 April | Austria | Franz, Mirjam, Sandra | Croatia | Božidara, Dragoljub, Franjo | Czechia | Erika | Denmark | Theodosius | Estonia | Ene, Eneken, Enel, Eneli, Enelin | Finland | Pellervo | France | Sandrine | Hungary | Áron | Italy | Francesco | Latvia | Glita, Irmgarde, Zemvaldis | Lithuania | Elona, Jostautas, Jostautė, Pranas, Pranciškus | Norway | Sigvard, Sivert | Poland | Franciszek, Sądomir, Urban, Władysław, Władysława | Romania | Tit | Russia | Svetlana | Slovakia | Zita | Spain | Francisco | Sweden | Gudmund, Ingemund |
| |
3 April | Austria | Richard, Sixtus | Croatia | Radojko, Ratko, Rikard, Siksto | Czechia | Richard | Denmark | Nicæas | Estonia | Uko, Uku | Finland | Sampo, Veeti | France | Richard | Germany | Irene | Hungary | Buda, Richárd | Italy | Riccardo | Latvia | Daira, Dairis, Ferdinands | Lithuania | Kristijonas, Ričardas, Rimtautė, Vytenis | Norway | Gunnvald, Gunvor | Poland | Antoni, Cieszygor, Jakub, Pankracy, Ryszard | Romania | Nichita | Slovakia | Richard | Spain | Ricardo | Sweden | Ferdinand, Nanna |
| |
4 April | Austria | Isidor, Konrad | Croatia | Benedikt, Izidor, Platon | Czechia | Ivana | Denmark | Ambrosius | Estonia | Ambrus, Arbo, Arp, Arpo | Finland | Ukko | France | Isidore | Hungary | Izidor | Italy | Isidoro | Latvia | Herta, Valda | Lithuania | Algaudas, Ambraziejus, Eglė, Izidorius | Norway | Nancy, Nanna, Nina | Poland | Ambroży, Bazyli, Benedykt, Izydor, Wacław, Wacława, Zdzimir | Romania | Iosif | Slovakia | Izidor | Spain | Benito | Sweden | Marianne, Marlene |
| |
5 April | Austria | Crescentia, Vinzenz | Croatia | Irena, Vinko | Czechia | Miroslava | Denmark | Irene | Estonia | Ireene, Irene, Reena, Reene, Rena, Renate | Finland | Ira, Irene, Irina, Iro | France | Irène | Germany | Juliana | Hungary | Vince | Italy | Vincenzo | Latvia | Mirjama, Vidaga, Vija, Virdžīnija | Lithuania | Irena, Rimvydas, Zenius, Zenonas, Žygintė | Norway | Eiril, Eirin, Irene | Poland | Borzywoj, Irena, Wincenty | Romania | Agatopod, Teodul | Slovakia | Miroslava | Spain | Vicente | Sweden | Irene, Irja |
| |
6 April | Austria | Notker, Wilhelm | Croatia | Irenej, Petar, Prudencije | Czechia | Vendula | Denmark | Sixtus | Estonia | Ville, Villem, Villi, Villo, Villu | Finland | Jami, Vilhelm, Vilho, Vili, Viljami, Ville | France | Marcellin | Greece | Evtychios | Hungary | Bíborka, Vilmos | Italy | Guglielmo | Latvia | Filips, Vilips, Zinta | Lithuania | Celestinas, Daugirutis, Genardas, Žintautė | Norway | Aasmund, Åsmund, Asmund | Poland | Ada, Adam, Adamina, Celestyn, Celestyna, Diogenes, Ireneusz, Katarzyna, Świętobor, Sykstus, Wilhelm, Zachariasz | Romania | Eutihie | Slovakia | Irena | Spain | Celestino, Gala, Guillermo, Prudencio | Sweden | Vilhelm, William |
| |
7 April | Austria | Johann | Croatia | Herman, Ivan, Teodor | Czechia | Herman, Hermína | Denmark | Egesippus | Estonia | Allan, Allo | Finland | Ahvo, Allan | France | Clotaire, Jean-Baptiste | Hungary | Herman | Italy | Ermanno | Latvia | Helmuts, Zina, Zinaīda | Lithuania | Donata, Hermanas, Kantautė, Minvydas | Norway | Oddveig, Oddvin | Poland | Donat, Donata, Epifaniusz, Hegezyp, Herman, Przecław, Rufin | Romania | Caliopie | Russia | Larissa | Slovakia | Zoltán | Spain | Juan | Sweden | Irma, Irmelin |
| |
8 April | Austria | Beate, Rose-Marie, Walter | Croatia | Diogen, Dionizije, Klement, Timotej | Czechia | Ema, Emanuel | Denmark | Janus | Estonia | Julia, Juuli, Juulika, Lia, Liana, Liane | Finland | Suoma, Suometar | France | Julie | Hungary | Dénes | Italy | Dionigi | Latvia | Dana, Danute, Dziedra, Edgars, Žanete | Lithuania | Dionizas, Girtautas, Julija, Skirgailė | Norway | Asle, Atle | Poland | Apolinary, Cezary, Cezaryna, Dionizy, Gawryła, January, Radosław, Sieciesława | Romania | Agav, Irodion, Lazar, Ruf | Russia | Alla, Anna | Slovakia | Albert | Spain | Amancio, Dionisio, Julia | Sweden | Nadja, Tanja |
| |
9 April | Austria | Casilda, Waltraud | Croatia | Celestina, Demetrije, Marija, Zdenko | Czechia | Dušan | Denmark | Otto, Procopius | Estonia | Iiris, Kaira, Kaire, Kairi | Finland | Eeli, Eelis, Elia, Elias, Eliel, Eljas | France | Gautier | Greece | Iosif, Sifis | Hungary | Erhard | Italy | Demetrio | Latvia | Valērija, Valtrauta, Varpa, Zubite | Lithuania | Aurimas, Dalia, Kleopas, Rasa | Norway | Rannveig, Rønnaug | Poland | Dobrosława, Dymitr, Maja, Marceli, Matron | Romania | Eupsihie | Slovakia | Milena | Spain | Casilda, Demetrio | Sweden | Ottilia, Otto |
| |
10 April | Austria | Ezechiel, Gernot, Holda | Croatia | Bonifacije, Ezekijel, Magdalena, Sunčica | Czechia | Darja | Denmark | Ezechiel | Estonia | Hindrek, Imre, Indrek, Ints | Finland | Tero | France | Fulbert | Greece | Herakles | Hungary | Zsolt | Italy | Terenzio | Latvia | Anita, Anitra, Turaida, Zīle, Zilite | Lithuania | Agna, Apolonijus, Margarita, Mintautas | Norway | Ingvald, Ingveig | Poland | Antoni, Apoloniusz, Daniel, Ezechiel, Grodzisław, Henryk, Makary, Małgorzata, Michał, Pompejusz | Romania | African, Maxim, Pompie, Terentie | Slovakia | Igor | Spain | Ezequiel, Miguel | Sweden | Ingvar, Ingvor |
| |
11 April | Austria | Hildebrand, Stanislaus | Croatia | Filip, Izak, Stana, Stanislav | Czechia | Izabela | Denmark | Leo | Estonia | Hurme, Hurmi, Urmi | Finland | Minea, Minka, Verna | France | Stanislas | Hungary | Leó, Szaniszló | Italy | Stanislao | Latvia | Hermanis, Ira, Irida, Vilmars | Lithuania | Daugailė, Leonas, Vykintas | Norway | Ulf, Ylva | Poland | Filip, Herman, Jaromir, Leon, Marek | Romania | Antipa, Calinic, Farmutie | Slovakia | Július | Spain | Estanislao, Gema, Gemma, Isaac | Sweden | Ulf, Ylva |
| |
12 April | Austria | Herta, Julius, Zeno | Croatia | Davorka, Julije, Sofija, Viktor | Czechia | Julius | Denmark | Julius | Estonia | Julius, Udo, Ullo, Ulrik, Uudo | Finland | Janna, Janni, Julia, Juliaana, Julius, Juuli | France | Jules | Germany | Julius | Greece | Anthe, Anthi | Hungary | Gyula | Italy | Giulio, Zenone | Latvia | Ainis, Jūlijs | Lithuania | Damijonas, Galkantas, Julijus, Jūratė | Norway | Julie, Julius | Poland | Andrzej, Iwan, Juliusz, Siemiodrog, Wiktor, Wiktoriusz, Zenon, Zenona | Romania | Sava | Slovakia | Estera | Spain | Constantino, Julio | Sweden | Liv |
| |
13 April | Austria | Hermenegild, Ida, Martin | Croatia | Ida, Martin | Czechia | Aleš | Denmark | Justinus | Estonia | Tarvi, Tarvo | Finland | Tellervo | France | Ida | Hungary | Ida | Italy | Martino | Latvia | Egils, Jagailis, Justins, Justs, Nauris | Lithuania | Algaudė, Ida, Mingaudas | Norway | Asta, Astrid | Poland | Hermenegild, Hermenegilda, Ida, Jan, Justyn, Małgorzata, Przemysł, Przemysław | Romania | Artemon | Slovakia | Aleš | Spain | Hermenegildo, Martín | Sweden | Artur, Douglas |
| |
14 April | Austria | Elmo, Erna, Ernestine | Croatia | Maksim, Valerijan, Zdravko | Czechia | Vincenc | Denmark | Tiburtius | Estonia | Lehe, Lehte, Lehti | Finland | Taito | France | Ludivine, Maxime | Hungary | Tibor | Italy | Abbondio | Latvia | Agape, Gudrite, Strauja | Lithuania | Justinas, Vaišvydė, Vaiva, Valerijonas, Visvaldas | Norway | Ellinor, Nora | Poland | Berenike, Julianna, Justyn, Maria, Myślimir, Tyburcjusz, Walerian, Waleriana | Romania | Pahomie | Russia | Maria | Slovakia | Justína | Spain | Lidia, Tiburcio, Valeriano | Sweden | Tiburtius |
| |
15 April | Austria | Anastasia, Damian, Una | Croatia | Rastislav, Teodor | Czechia | Anastázie | Denmark | Olympia | Estonia | Uljas, Uljo, Verner, Verni | Finland | Linda, Tuomi | France | César, Paterne | Greece | Leonidas | Hungary | Anasztázia, Tas | Italy | Annibale | Latvia | Aelita, Agita, Balvis, Gastons | Lithuania | Anastazijus, Liudvina, Modestas, Vaidotė, Vilnius | Norway | Oda, Odd, Odin | Poland | Anastazja, Bazyli, Leonid, Ludwina, Modest, Olimpia, Tytus, Wacław, Wacława, Wiktoryn, Wszegniew | Romania | Aristarh, Pud, Trofim | Slovakia | Fedor | Spain | Telmo | Sweden | Oliver, Olivia |
| |
16 April | Austria | Bernadette, Magnus | Croatia | Bernardica, Leonida | Czechia | Irena | Denmark | Mariane | Estonia | Olivia, Olve, Olvi | Finland | Jalo, Patrik | France | Benoît-Joseph | Hungary | Csongor | Italy | Bernadette, Maria | Latvia | Alfs, Mindaugs, Mintauts | Lithuania | Algedė, Gražvydas, Kalikstas | Norway | Magnus, Mons | Poland | Benedykt, Bernadetta, Cecyl, Cecylian, Charyzjusz, Erwin, Erwina, Julia, Ksenia, Lambert, Lamberta, Nikita, Nosisław, Patrycy, Urban | Romania | Agapi, Hionia, Irina | Slovakia | Dana, Danica | Spain | Engracia, Fructuoso, Toribio | Sweden | Patricia, Patrik |
| |
17 April | Austria | Eberhard, Rudolph | Croatia | Ilija, Inocent, Šimun | Czechia | Rudolf | Denmark | Anicetus | Estonia | Ege, Eike, Hiie | Finland | Otto | France | Anicet | Hungary | Rudolf | Italy | Roberto | Latvia | Rūdis, Rūdolfs, Viviāna | Lithuania | Anicetas, Dravenis, Giedrius, Robertas, Skaidra | Norway | Elise, Elsa | Poland | Anicet, Innocenta, Innocenty, Jakub, Józef, Klara, Radociech, Robert, Roberta, Rudolf, Rudolfa, Rudolfina, Stefan | Romania | Simeon | Slovakia | Rudolf | Spain | Aniceto | Sweden | Elias, Elis |
| |
18 April | Austria | Werner, Wigbert | Bulgaria | Viktor, Viktoriya | Croatia | Atanazija, Eusebije, Hermogen, Roman | Czechia | Valérie | Denmark | Eleutherius | Estonia | Valdek, Valdeko, Valdemar, Valdo, Valdu, Valdur, Valmar, Valmer, Voldemar, Volli, Volmer | Finland | Valdemar, Valto | France | Parfait | Germany | Werner | Hungary | Andrea, Ilma | Italy | Galdino | Latvia | Dana, Hildegarde, Jadviga, Laura, Nameisis | Lithuania | Apolonijus, Eitvilas, Girmantė, Undinė | Norway | Eilen, Eilert | Poland | Apoloniusz, Bogusław, Bogusława, Flawiusz, Gościsław | Romania | Ioan | Slovakia | Valér | Spain | Perfecto | Sweden | Valdemar, Volmar |
| |
19 April | Austria | Gerold, Leo, Marcel | Croatia | Ema, Konrad, Rastislav | Czechia | Rostislav | Denmark | Daniel | Estonia | Aalike, Aleksandra, Alli, Allo, Andra, Sandra | Finland | Pälvi, Pilvi | France | Emma | Hungary | Emma | Italy | Emma, Ermogene | Latvia | Fanija, Liba, Vēsma | Lithuania | Aistė, Eirimas, Leonas, Leontina, Simonas | Norway | Arnfinn, Arnstein | Poland | Adolf, Adolfa, Adolfina, Alf, Cieszyrad, Czech, Czechasz, Czechoń, Czesław, Leon, Leontyna, Pafnucy, Tymon, Werner, Włodzimierz | Romania | Ioan | Slovakia | Jela | Spain | Expedito, León | Sweden | Ola, Olaus |
| |
20 April | Austria | Hildegund, Odetta, Wilhelm | Croatia | Berta, Loen, Marta | Czechia | Marcela | Denmark | Sulpicius | Estonia | Orvi, Urbe, Urva, Urve, Urvi | Finland | Lauha, Neela, Nella | France | Odette, Théotime | Hungary | Tivadar | Italy | Adalgisa | Latvia | Amula, Armands, Mirta, Ziedīte | Lithuania | Agnė, Eisvydė, Gostautas, Marcijonas | Norway | Kjellaug, Kjellrun | Poland | Agnieszka, Amalia, Czech, Czechasz, Czechoń, Czesław, Florencjusz, Florenty, Nawoj, Sulpicjusz, Szymon, Teodor | Romania | Teotim | Slovakia | Marcel | Spain | Inés | Sweden | Amalia, Amelie |
| |
21 April | Austria | Anselm, Konrad | Croatia | Anzelmo, Konrad | Czechia | Alexandra | Denmark | Florentius | Estonia | Aimar, Aimer, Aimo, Aimur | Finland | Anselmi, Anssi | France | Anselme | Hungary | Konrád | Italy | Anselmo | Latvia | Anastasija, Marģers, Margonis, Nilola | Lithuania | Amalija, Anzelmas, Milgedas, Skalvė | Norway | Jannike, Jeanette | Poland | Addar, Anzelm, Bartosz, Drogomił, Feliks, Irydion, Konrad, Konrada, Selma | Romania | Ianuarie | Slovakia | Ervín | Spain | Anselmo | Sweden | Anneli, Annika |
| |
22 April | Austria | Alfred, Kaj, Leonidas | Croatia | Kajo, Leonida, Soter, Vojmil | Czechia | Evženie | Denmark | Cajus | Estonia | Meeri, Meri, Merike, Merje | Finland | Aida, Alina | France | Alexandre | Greece | Nathanael | Hungary | Csilla, Noémi | Italy | Caio, Sotero | Latvia | Armanda, Armands, Usins, Vitālijs | Lithuania | Leonas, Leonidas, Norvaidė, Visgailas | Norway | Oddgeir, Oddny | Poland | Heliodor, Kajus, Leonia, Leonid, Łukasz, Soter, Strzeżymir, Teodor | Romania | Teodor | Slovakia | Slavomír | Spain | María, Sotero | Sweden | Allan, Glenn |
| |
23 April | Austria | Adalbert, Georg, Jörg, Jürgen | Croatia | Adalbert, Đurđica, Đuro, Juraj | Czechia | Vojtěch | Denmark | Georgius | Estonia | Georg, Jürgen, Jürgo, Jüri, Jürjo, Jürnas, Jüts, Ürjo | Finland | Jiri, Jori, Jyri, Jyrki, Yrjänä, Yrjö | France | Georges | Germany | Georg, Gerhard | Greece | Georgios, Giorgos, Yorgos | Hungary | Béla | Italy | Giorgio | Latvia | Georgs, Jorens, Jurģis, Juris | Lithuania | Adalbertas, Daugaudas, Jurgis, Vygailė | Norway | Georg, Jørgen, Jørn | Poland | Adalbert, Gerard, Gerarda, Gerhard, Helena, Jerzy, Wojciech | Romania | Gheorghe | Slovakia | Vojtech | Spain | Jorge | Sweden | Georg, Göran |
| |
24 April | Austria | Egbert, Fidelis, Wilfried | Croatia | Fidel, Vjera, Vjeran | Czechia | Jiří, Jiřina | Denmark | Albertus | Estonia | Aada, Iida, Vaida, Vanda | Finland | Albert, Altti, Pertti | France | Fidèle | Greece | Elisavet | Hungary | György | Italy | Fedele | Latvia | Nameda, Varis, Visvaldis, Visvaris | Lithuania | Ervina, Fidelis, Kantrimas | Norway | Albert, Olaug | Poland | Aleksander, Aleksy, Egbert, Erwin, Erwina, Fidelis, Grzegorz, Horacjusz, Horacy | Romania | Ilie, Iosif, Pasicrat, Sava, Valentin | Slovakia | Juraj | Spain | Fidel | Sweden | Vega |
| |
25 April | Austria | Erwin, Markus | Bulgaria | Marko | Croatia | Franka, Marko, Maroje | Czechia | Marek | Denmark | Markus | Estonia | Marek, Margo, Margus, Mark, Marko, Markus | Finland | Markku, Marko, Markus | France | Marc | Germany | Markus | Greece | Markela, Markos, Nike, Niki | Hungary | Márk | Italy | Marco | Latvia | Barbala, Līksma, Liksme, Marks, Markus | Lithuania | Gražvyda, Gražvydė, Morkus, Tolmantas, Žadmantė | Norway | Mark, Markus | Poland | Jarosław, Marek, Wasyl | Romania | Marcu, Vasile | Slovakia | Marek | Spain | Marcos | Sweden | Markus |
| |
26 April | Austria | Helene, Trudpert | Croatia | Kleto, Maksima, Montan, Stanislav, Višnja | Czechia | Oto | Denmark | Cletus | Estonia | Eesi, Reesi, Teesi, Teisi, Tereese | Finland | Teresa, Terttu, Tessa | France | Alida | Hungary | Ervin | Italy | Marcellino | Latvia | Alīna, Geraldine, Rusins, Sandris | Lithuania | Dargailė, Gailenis, Klaudijus | Norway | Tea, Terese | Poland | Artemon, Klaudiusz, Klet, Marcelin, Marcelina, Maria, Marzena, Spycimir | Romania | Chindeu, Chiril, Tasie, Vasile | Slovakia | Jaroslava | Spain | Isidoro | Sweden | Terese, Teresia |
| |
27 April | Austria | Petrus, Zita | Bulgaria | Lazar*, Lazo* | Croatia | Euzebije, Ozana, Polion | Czechia | Jaroslav | Denmark | Ananias | Estonia | Haldi, Haldja, Halja | Finland | Meea, Merja | France | Zita | Greece | Lazaros* | Hungary | Zita | Italy | Zita | Latvia | Inars, Klementīne, Raimonda, Tāle | Lithuania | Anastazas, Aušra, Gotautas, Zita | Norway | Charles, Charlotte, Lotte | Poland | Anastazy, Andrzej, Bożebor, Kanizjusz, Martyn, Piotr, Teofil, Zyta | Romania | Simeon | Slovakia | Jaroslav | Spain | Montserrat, Pedro, Zita | Sweden | Engelbrekt |
| |
28 April | Austria | Hugo, Ludwig, Pierre | Bulgaria | Bozhan*, Bozhana*, Violeta*, Vurban*, Vurbana*, Yasen*, Yasna*, Yavor*, Zdravka*, Zdravko* | Croatia | Dada, Ljudevit, Petar | Czechia | Vlastislav | Denmark | Vitalis | Estonia | Lagle, Luige | Finland | Ilpo, Ilppo, Tuure | France | Valérie | Greece | Vaia*, Vaios* | Hungary | Valéria | Italy | Valeria | Latvia | Gundega, Gunta, Terēze | Lithuania | Rimgailė, Valerija, Vitalius, Vygantas | Norway | Vivi, Vivian | Poland | Arystarch, Maria, Paweł, Przybyczest, Waleria, Witalis | Romania | Iason, Sosipatru | Russia | Tamara | Slovakia | Jarmila | Spain | Luis, Pedro, Prudencio | Sweden | Ture, Tyra |
| |
29 April | Austria | Katharina, Roswitha | Croatia | Hugo, Katarina, Sever | Czechia | Robert | Denmark | Peter | Estonia | Kalmer, Kalmo | Finland | Teijo | France | Catherine | Germany | Hugo, Robert | Greece | Iason | Hungary | Péter | Italy | Cristino | Latvia | Laine, Raimonds, Vilnis | Lithuania | Augustinas, Indrė, Rita, Tarmantas | Norway | Toralf, Torolf | Poland | Angelina, Augustyn, Bogusław, Hugo, Hugon, Paulin, Piotr, Rita, Robert, Roberta, Sybilla | Russia | Irina | Slovakia | Lea | Spain | Antonia, Catalina, Hugo | Sweden | Tyko |
| |
30 April | Austria | Pauline, Pius, Silvio | Croatia | Pio, Venancije | Czechia | Blahoslav | Denmark | Serverus, Valborg | Estonia | Miia, Mirja, Mirjam, Mirje | Finland | Miia, Mira, Mirella, Mirja, Mirjami, Mirka, Mirkka, Mirva | France | Robert | Hungary | Katalin, Kitti | Italy | Pio | Latvia | Liāna, Liliāna, Lilija, Linda | Lithuania | Marijonas, Sofija, Venta, Virbutas | Norway | Gina, Gitte | Poland | Bartłomiej, Chwalisława, Eutropiusz, Jakub, Katarzyna, Lilla, Marian | Romania | Iacov | Slovakia | Anastázia | Spain | José, Pío | Sweden | Mariana |
|