Principality of Andorra (before 1806)
Similar to the flag of Catalonia, the two have a deep connection, and Andorra belongs to the region of Northern Catalonia.
Principality of Andorra (1806-1866)
Kingdom of Andorra (1934)
This is the flag used by Boris Skossyreff, who is self-proclaimed King of Andorra.
Principality of Andorra (1939-1949)
Principality of Andorra (1949-1959)
Principality of Andorra (1959–present)
The flags are similar elsewhere, except for the part of the upper left corner of the coat of arms that represents Bishop Urgell. The blue and red colors on the flag are also the colors on the flag of Andorra's northern neighbor, France, and yellow and red are also the colors on the flag of Andorra's southern neighbor, Spain.