Eno's name day is celebrated annually on January 19 in Estonia.
Eno is a rare name globally, with its highest concentration and historical usage found in Estonia and surrounding Northern European regions. It derives from ancient Germanic elements associated with strength and edges, manifesting today as a minimalist and techy-sounding name. The name is predominantly masculine, favored for its simplicity and directness in its native cultural context. It lacks the widespread popularity seen in the United States, remaining a distinct and rare selection. The overall tone of the name is sharp, efficient, and grounded, appealing to those who prefer short, resonant monikers. Its structure feels modern and futuristic, providing a balance between historical substance and contemporary appeal.
| Country | Day | Month | Names |
 Austria | 3 | January | Genoveva, Odilio |
 Croatia | 3 | January | Isusovo, Genoveva, Cvijeta |
 Denmark | 3 | January | Enoch |
 Greece | 3 | January | Genovefa, Genevieve |
 Hungary | 3 | January | Genovéva, Benjámin |
 Lithuania | 3 | January | Genovaite, Vida, Viltautas |
 Poland | 3 | January | Arletta, Dan, Danisz, Danuta, Enoch, Genowefa, Piotr, Włościsława |
 Spain | 3 | January | Daniel, Genova, Genoveva, Jennifer, Florencio, Prisciliano |
 Italy | 4 | January | Genoveffa |
 USA | 22 | January | Enoch, Piper, Vicenta, Vicente, Vince, Vincent, Vincentia, Vincenzo, Vinnie |
 Estonia | 23 | January | Rene, Reeno, Räni, Ramon |
| Greece | 26 | January | Xenofontos |
 Romania | 26 | January | Arcadie, Ioan, Iosif, Maria, Xenofont |
 Ukraine | 30 | January | Gregory, Zenon, Zenonia, Zenia |
| Poland | 8 | February | Gniewomir, Gniewosz, Honorat, Jan, Ksenofont, Lucjusz, Paweł, Piotr, Salomon, Sebastian, Żaklina |
| Poland | 14 | February | Adolf, Adolfa, Adolfina, Alf, Cyryl, Dobiesława, Dobisława, Józef, Józefa, Konrad, Konrada, Krystyna, Lilian, Liliana, Mikołaj, Niemir, Niemira, Walenty, Zenon, Zenona |
 France | 3 | March | Guénolé, Marin |
 Bulgaria | 10 | March | Galin, Galina, Galya, Galyo, Genoveva |
| Lithuania | 5 | April | Irena, Rimvydas, Zenius, Zenonas, Zyginte |
| Austria | 12 | April | Herta, Julius, Zeno |
| Bulgaria | 12 | April | Vencislav, Vencislava, Violeta, Varban, Girgin, Girgina, Dilyan, Dilyana, Zdravka, Zdravko, Latinka, Lilyana, Margarita, Nevena, Roza, Rosen, Rosica, Trendafil, Trendafilka, Tsvetan, Tsveta, Tsvetanka, Tsviatko, Tseno, Stanislav, Stanislava |
| Italy | 12 | April | Zenone |
| Poland | 12 | April | Andrzej, Iwan, Juliusz, Siemiodrog, Wiktor, Wiktoriusz, Zenon, Zenona |
| Spain | 12 | April | Andrés, Damián, Julio, Zenón |
| Bulgaria | 6 | May | Georgi, Georgiya, Gergana, Gyuro, Galin, Galina, Galya, Ganka, Gancho, Genko, Genoveva, Gergin, Gergana, Gergina, Ginka, Zhorzh |
| Croatia | 24 | May | Marija Pom., Prijenos sv. Dom. |
 Latvia | 10 | June | Anatols, Bitite, Genoveva, Malva, Merida |
 Finland | 15 | June | Viena, Vieno, Mona, Vieno |
| Poland | 16 | June | Alina, Aneta, Benon, Budzimir, Jan, Justyna, Ludgarda |
| Poland | 22 | June | Achacjusz, Achacy, Agenor, Alban, Broniwoj, Flawiusz, Innocenta, Innocenty, Kirył, Paulina |
| Lithuania | 23 | June | Arvydas, Vaida, Vanda, Zenonas |
| Poland | 23 | June | Agrypina, Albin, Bazyli, Józef, Piotr, Prosper, Wanda, Zenon, Zenona |
| France | 25 | June | Aliénor, Eléonore, Prosper, Salomon |
| Spain | 5 | July | Filomena, Filomeno, Zoa |
| Poland | 9 | July | Anatolia, Heloiza, Hieronim, Łucja, Lucja, Ludwika, Lukrecja, Mikołaj, Patrycjusz, Weronika, Wszebąd, Zenon, Zenona |
| France | 11 | July | Benoit, Olga, Yolande |
| Hungary | 13 | July | Jenő |
| Latvia | 9 | August | Gedimins, Genoveva, Madara, Tautgodis |
| Estonia | 21 | August | Sven, Sveno |
| Poland | 3 | September | Antoni, Bartłomiej, Bazylissa, Bronisław, Bronisz, Erazma, Eufemia, Eufrozyna, Izabela, Jan, Joachim, Joachima, Manswet, Mojmir, Szymon, Wincenty, Zenon, Zenona |
| Poland | 30 | October | Alfons, Alfonsyna, Angel, Angelus, Edmund, Klaudiusz, Przemysław, Sądosław, Zenobia |
| Romania | 30 | October | Zenovia, Zenovie |
| USA | 30 | October | Arilda, Xena, Xenia, Ximena, Zena, Zenas, Zenia, Zeno, Zenobia |
| Poland | 9 | November | Bogudar, Genowefa, Nestor, Teodor, Ursyn |
| Hungary | 18 | November | Jenő |
| Greece | 23 | November | Elenos |
| Italy | 4 | December | Giovanni Damasceno |
| Lithuania | 8 | December | Gedminte, Guntilda, Vaidginas, Zenonas |
| Croatia | 21 | December | Honorat, Caslav, Zenon |
| Hungary | 22 | December | Zénó |
| Lithuania | 22 | December | Dobile, Gedvydas, Ksavera, Zenonas |
| Poland | 22 | December | Beata, Drogomir, Flawian, Franciszka, Gryzelda, Honorata, Ksawera, Ksaweryna, Zenon, Zenona |
| Poland | 24 | December | Ada, Adam, Adamina, Adela, Ewa, Ewelin, Ewelina, Godzisława, Grzegorz, Grzymisława, Hermina, Herminia, Irma, Irmina, Zenobiusz |