Jaromar III of Rügen (° before 1249, † before 1285) is prince of Rügen.

Jaromar III is the son junior by Jaromar II of Rügen and Euphémie of Poméranie, the girl of Świętopełk II of Poméranie. Its name is mentioned for the first time in a document gone back to April 1249.

With died of his father, assassinated in 1260, it controls with his brother Wisław. A document dated from the March 5th 1268 gives him the title of prince like to his Wisław brother.

Jaromar never married and does not have a heir. Its place of burial is unknown.