Andorran nationality law is based primarily on the principle of jus sanguinis.

Children born to recognised parents who were Andorran citizens at the time of birth (regardless of the place of birth) are eligible for Andorran citizenship.

Former Andorran citizens may restore their former citizenship if their request to the government is successful.

[1] Dual nationality is strictly forbidden by Andorran law.

On the other hand, Spanish law recognizes dual nationality with Andorra.