How do you say what is your last name in Spanish?

“¿Cuál es tu nombre?” is one way to say “What is your name?” in Spanish.

“Apellido” (pronounced “aah-peh-yee-doh”) means “last name.” Therefore, “¿Cuál es tu apellido?” is how to say, “What is your last name?” in Spanish.

You can also say “¿Me regalas tu apellido?” which means, “Can I have your last name?”