vs 

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"De quién" is a phrase which is often translated as "whose", and "a quién" is a phrase which is often translated as "to whom". Learn more about the difference between "de quién" and "a quién" below.
de quién(
deh
 
kyehn
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. whose
¿De quién son estos libros?Whose books are these?
b. to whom
¿De quién es el coche que está bloqueando el garaje?To whom does the car that's blocking the garage belong?
c. who
¿De quién son esas casas?Who owns those houses?
a. who
¿En nombre de quién habla usted?Who are you representing?
¿De parte de quién?Who shall I say is calling?
Copyright © 2025 Dictionary Media Group, Inc.
a quién(
ah
 
kyehn
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. to whom
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
(formal)
¿A quién le vendió su casa?To whom did you sell your house?
b. whom
¿A quién fuiste a visitar esta tarde?Whom did you visit today?
c. who
¿A quién le falta libro?Who hasn't got a book?
a. to whom
Si no sabe a quién dirigir la carta, llame y pregunte.If you don't know to whom you should address the letter, inquire about it over the phone.
b. whom
No vas a adivinar a quién he visto hoy.You'll never guess whom I saw today.
c. who
Me pregunto a quién le podría interesar.I wonder who might be interested.
a. who
¡A quién le importa eso ahora!Who cares about that now!
Copyright © 2025 Dictionary Media Group, Inc.
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