Baby Names Girl Names Meaning of the Name Fidelia Updated November 9, 2025 by Jennifer M. Fidelia Gender: Female Origin: Spanish Meaning: Faithful, Loyal ♥ Add to my Namelist What is the meaning of the name Fidelia? The name Fidelia is primarily a female name of Spanish origin that means Faithful, Loyal. People who like the name Fidelia also like: Charlotte, Aurelie, Gemma, Eleanor, Rosalie, Hermione, Felicity, Felix, Cedric, Jasper, Adlai, Jonah, Grayson, Elijah Names like Fidelia: Fedele, Fadil, Fidella, Fidel, Fidelio, Fedella Stats for the Name Fidelia Fidelia is currently not in the top 100 on the Baby Names Popularity Charts Fidelia is currently not ranked in U.S. births