Phraates (Parthian: 𐭐𐭓𐭇𐭕Frahāt) was a Parthian prince, who was one of the eldest sons of Phraates IV (r. 37–2 BC).
In 10/9 BC, seeking to secure the throne for her son Phraataces, Musa convinced Phraates IV to send his four first-born sons (Vonones, Phraates, Seraspandes and Rhodaspes) to Rome in order to prevent conflict over his succession.[1] The Roman emperor Augustus used this as propaganda depicting the submission of Parthia to Rome, listing it as a great accomplishment in his Res Gestae Divi Augusti.[2] During his stay in Rome, Phraates was the patron of a temple at Nemi, possibly devoted to Isis.[3] In 35 AD, Phraates attempted to take the Parthian throne from Artabanus II, but died from illness shortly after reaching the Parthian realm.[4]