The Andorran passport is issued to Andorran citizens for international travel.
Although citizens of Andorra are not EU citizens, they can nonetheless use the lanes for EU, EEA and Swiss citizens when crossing the external borders of the Schengen Area instead of using the desks for third-country nationals.
Andorran passport Wikipedia
Visa requirements for Andorran citizens are administrative entry restrictions imposed by the authorities of other states. In 2013, Andorran citizens had visa-free or visa on arrival access to 147 countries and territories, ranking the Andorran passport 18th in the world (tied with Argentinian).