A bilingual name is a name of a person that is spelled, if not pronounced, exactly the same in two languages. The speakers of a certain language usually have names that do not exist in another language. Even when the name has a common root or refers to the same historic or religious figure, different languages will spell and pronounce the name in a unique way. Thus a name with identical spelling in two languages may be of interest to parents of Third Culture Kids, or immigrants.
Along with the comparatively slow changes in child-naming customs, many parents throughout the world give their child a name that does not have a common translation in their own language like Adabel Anahí, sometimes as an aspirational gesture.
Rarely used male bilingual names in English and Spanish
Aaron
Abel
Abraham
Amos
Brendan
Bruno
Caleb
Crispin
Hugo
Jon
Leon
Levi
Mario
Noel
Oliver
Roman
Saul
Tobias
Tristan
Xavier
Commonly used male bilingual names in English and Spanish
Adrian
Benjamin
Christian
David
Daniel
Damian
Felix
Gabriel
Isaac
Ivan
Julian
Lucas
Martin
Oscar
Sebastian
Ruben
Samuel
Simon
Victor
Rarely used female bilingual names in English and Spanish
Adabel
Aida
Alda
Alma
Anahí
Belinda
Brenda
Calista
Dora
Edwina
Edilma
Juliana
Leonora
Marla
Martina
Norma
Tamara
Ursula
Virginia
Zoe
Commonly used female bilingual names in English and Spanish
Abigail - Rare in Spanish
Adelaide/Adele/Adeliza/Alix/Adela - The Spanish spelling is tolerated in English
Amanda
Amelia/Amalia - The English spelling is tolerated in Spanish
Andrea
Anna/Ana - The English spelling is tolerated in Spanish
Annabel/Anabel - The Spanish spelling is tolerated in English
Barbara - Rare in Spanish
Cecilia
Christina/Cristina
Claudia
Diana
Dolores - Rare in English
Elaine/Eliana - The Spanish spelling is tolerated in English
Emily/Emilia - The Spanish spelling is tolerated in English
Emma
Gabriela/Gabriella
Gemma - Rare in Spanish
Helen/Helena/Elena - The bold spelling is tolerated in English and Spanish
Irene
Julia
Lisa - Rare in Spanish
Linda - Rare in Spanish
Mary/Maria - The Spanish spelling is tolerated in English
Marcia - Rare in Spanish
Maura - Rare in English
Melinda - Rare in Spanish
Micaela - Rare in English
Miriam - Rare in English
Monica/Mónica
Naomi - Rare in Spanish, this name is actually a trilingual name as it exists in Japanese too.
Olga - Rare in English
Olivia
Patricia
Paula
Pauline/Paulina - The Spanish spelling is tolerated in English
Pamela - Rare in Spanish
Priscilla/Priscila - The Spanish spelling is tolerated in English
Rose/Rosa - The Spanish spelling is tolerated in English
Sarah/Sara - The Spanish spelling is tolerated in English
Serena - Rare in Spanish
Sophie/Sofie/Sophia/Sofia - The Spanish spelling is tolerated in English
Susan/Suzan/Susann/Susanne/Suzanne/Susanna/Susannah/Susana - The Spanish spelling is tolerated in English
Sylvia/Silvia - The English spelling is tolerated in Spanish
Tanya/Tania - The Spanish spelling is tolerated in English
Theresa/Therese/Teresa - the bold spelling is tolerated in English and Spanish