This is a list of co-princes of Andorra.
For further information on the origin and development of the unique Andorran monarchical system, together with details concerning the powers and prerogatives of the Andorran co-princes, see the article Co-princes of Andorra.
From July 10-July 23, 1934, a pretender, Boris Skossyreff, proclaimed himself 'King of Andorra' and proposed a new Constitution, but Co-Prince Vilardebó requested of Spanish authorities to expel him from the country.