| Phraates V | |
|---|---|
| Great King, King of Kings, Arsaces | |
,_Seleucia_mint_(cropped).jpg) Coin of Phraates V minted at Seleucia | |
| King of the Parthian Empire | |
| Reign | 2 BC – 4 AD |
| Predecessor | Phraates IV |
| Successor | Orodes III |
| Co-ruler | Musa (2 BC – 4 AD) |
| Born | c. 19 BC |
| Died | 1st-century AD |
| Father | Phraates IV |
| Mother | Musa |
| Religion | Zoroastrianism |
Phraates V (Parthian: 𐭐𐭓𐭇𐭕 Frahāt), also known by the diminutive version of his name, Phraataces (also spelled Phraatakes), was the King of Kings of the Parthian Empire from 2 BC to 4 AD. He was the younger son of Phraates IV (r. 37 BC – 2 BC) and Musa, who ruled with him.
Under Phraates V, a war threatened to break out between the Parthian and Roman empires over the control of Armenia and Mesopotamia. Although Augustus (r. 27 BC – 14 AD) had sent his adopted son Gaius Caesar to invade Iran, in 1 AD the two sides agreed a peace treaty, by which once again Armenia was recognized as being in the Roman sphere. Phraates V was in return acknowledged as the rightful Parthian king, which was of high importance to him, due to his insecure position in the country. In 4 AD, Phraates V and his mother fled to Rome after being expelled by the Parthian nobility, who crowned Orodes III as king.