What do you put as segundo apellido if you have one surname?

Write your surname in the primer apellido box and leave the segundo apellido empty; if asked ¿Y el segundo apellido?, the answer is solo tengo un apellido. Almost all of Spanish-speaking America also uses two surnames, though in Argentina many people use only one in daily life.

Forms, and the second box

Spanish forms have two boxes: primer apellido and segundo apellido. If you have only one surname, write it in the first box and leave the second empty. A hotel receptionist may ask ¿Y el segundo apellido?; the answer is solo tengo un apellido.

Elsewhere: almost all of Spanish-speaking America uses two surnames too. In Argentina many people use only one in daily life. In Portugal and Brazil it is usually the other way round, with the father's surname last.

  • Spanish forms have two boxes, first surname and second surname; with only one surname, fill the first and leave the second empty.
  • Almost all of Spanish-speaking America also uses two surnames; in Argentina many people use only one in daily life; in Portugal and Brazil the father's surname usually goes last.
Solo tengo un apellido.

I only have one surname.

En casi toda Hispanoamérica también se usan dos apellidos.

In almost all of Spanish-speaking America two surnames are used too.

More about The two surnames

Sources

  1. Two surnames — Dos apellidos