Prince Barin is a character in the Flash Gordon stories. He is king of a region of Mongo called Arboria. Barin becomes one of Flash's best friends, and is deeply in love with Princess Aura. In his appearance, Barin resembles the character of Robin Hood.
Barin appears regularly in the Flash Gordon comic strip, becoming the ruler of Mongo after Ming's overthrow. When he first appears he is a leader of the resistance and forces Flash to fight Zarkov, but impressed with his bravery he lets them both live. Later he disguises himself and enters a Tournament of Mongo hoping to win Princess Aura, however is forced to fight Flash. When his identity is revealed in the final bout the people ask for both to be given Kingdoms. Barin is able to marry the Princess and is given the Kingdom of the Trees despite it being unconquered.
Prince Barin was first portrayed by Richard Alexander in the 1936 Flash Gordon film serial. He reprised the same role in the 1938 sequel Flash Gordon's Trip to Mars. In the 1940 sequel Flash Gordon Conquers the Universe, the role was portrayed by Roland Drew.