弗拉特斯四世（？－前2年）帕提亚国王（约前37年~前2年在位）。

弗拉特斯四世为帕提亚国王奥罗德二世之子。在他统治时期发生的大事是，弗拉特斯四世击退了由后三头之一的马克·安东尼亲自率领的罗马大军（据说有10万人之多）对帕提亚的报复性入侵。罗马人损失了3万名战士。

弗拉特斯四世在宫廷政变中被其子弗拉特斯五世谋杀。

Phraates IV of Parthia (Persian:فرهاد چهارم‎‎), son of Orodes II (Persian:ارد دوم‎‎), ruled the Parthian Empire from 37–2 BC. He was appointed successor to the throne in 37 BC, after the death of his brother Pacorus I. He soon murdered his father and all his thirty brothers.