Baby Names Girl Names Meaning of the Name Fidelia Updated January 19, 2026 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: Hermione, Rosalie, Gemma, Felicity, Eleanor, Aurelie, Charlotte, Elijah, Felix, Jonah, Jasper, Grayson, Adlai, Cedric Names like Fidelia: Fidella, Fidelio, Fadil, Fidel, Fedella, Fedele 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