The NameDays in Spain for May present a rich variety of names, with many unique celebrations throughout the month. Estela is the most frequently appearing name, celebrated on May 3rd, 11th, and 30th. Several other names like Silvano, Domingo, Alejandro, Germán, Emilio, and Felipe also appear on multiple dates. Many individual days honor a diverse set of names, often including both traditional and more distinct choices. Overall, the list reflects a broad spectrum of given names with significant cultural relevance across Spain for May.
| Country | Day | Month | Names |
 Spain | 1 | May | Berta, Tamar, Tamara, Oroncio, Andeoro, Teodardo, Paciencia |
| Spain | 2 | May | Germán, Araceli, Atanasio, Vindemial, Exuperio, Zoé, Mafalda |
| Spain | 3 | May | Juvenal, Violeta, Evencio, Teódulo, Alejandro, Estela, Felipe |
| Spain | 4 | May | Florián, Froilán, Lidón, Silvano, Paulino, Porfirio |
| Spain | 5 | May | Adrián, Silvano, Niceto, Ángelica |
| Spain | 6 | May | Domingo, Evodio, Protógenes, Judith |
| Spain | 7 | May | Augusto, Flavio, Gisela |
| Spain | 8 | May | Acacio |
| Spain | 9 | May | Gregorio, Hermas, Geroncio |
| Spain | 10 | May | Job, Solange, Gordiano |
| Spain | 11 | May | Estela, Favio, Amparo, Poncio, Eudaldo, Iluminado, Anastasio |
| Spain | 12 | May | Domingo, Nerea, Nereo, Aquileo, Flavia, Domitila |
| Spain | 13 | May | Imelda, Fátima |
| Spain | 14 | May | Matías, Corona, Cora, Henedina, Alba, Gemma |
| Spain | 15 | May | Cecilio, Eufrasia, Isidro, Torcuato, Indalecio |
| Spain | 16 | May | Brenda, Ubaldo, Honorato |
| Spain | 17 | May | Eric, Erica, Pascual |
| Spain | 18 | May | Alejandra, Félix, Próspero |
| Spain | 19 | May | Celestina, Celestino, Crispín |
| Spain | 20 | May | Orlando, Baudilio, Asterio |
| Spain | 21 | May | Constantino, Virginia, Giselle, Valente |
| Spain | 22 | May | Emilio, Rita, Rosana |
| Spain | 23 | May | Miguel, Mercurial, Eufebio, Humildad, Desiderio |
| Spain | 24 | May | Rocío, Susana, Auxiliadora, Providencia, Ester |
| Spain | 25 | May | Valentín, Valentina, Sonia |
| Spain | 26 | May | Felipe Neri, Zacarías |
| Spain | 27 | May | Carolina |
| Spain | 28 | May | Agustín, Bernardo, Emilio, Germán |
| Spain | 29 | May | Alejandro, Justo, Teodosia |
| Spain | 30 | May | Fernando, Estela, Fernanda, Hernán, Lorena, Hernando |
| Spain | 31 | May | Visitación, Petronila, Amelia, Avelina |
