In Greek mythology, Magnes (/ˈmæɡˌniːz/; Ancient Greek: Μάγνης) was a son of Argos (son of Phrixus) and Perimele (daughter of Admetus). He lived in the region of Thessaly, in the land which men called after him Magnesia. Magnes had a son of remarkable beauty, Hymen by the muse Calliope.