希律（希伯来语：הוֹרְדוֹס‎，古希腊语：Ἡρῴδης，英语：Herod，前74年－前4年），又译希律王、黑落德王，亦被称为大希律王（Herod the Great）、希律大帝，希律一世（Herod I），是罗马帝国犹太行省的从属王。

根据记载，希律是位残酷的国王，为了权位，曾下令杀害自己的家人与多位拉比。但他也是犹太历史上最著名的建设者，他扩建了耶路撒冷的第二圣殿（又称希律的圣殿），修建了该撒利亚（Caesarea Maritima）的港口，创建马萨达与希律宫（Herodium）的城墙。他的生平数据主要来自于公元1世纪犹大史学家弗拉维奥·约瑟夫斯的著作。

Herod (/ˈhɛrəd/; Hebrew: הוֹרְדוֹס, Hordos, Greek: Ἡρῴδης, Hērōdēs; 74/73 BCE – 4 BCE), also known as Herod the Great and Herod I, was a Roman client king of Judea, referred to as the Herodian kingdom. He has been described as "a madman who murdered his own family and a great many rabbis", "the evil genius of the Judean nation", "prepared to commit any crime in order to gratify his unbounded ambition", and "the greatest builder in Jewish history". He is known for his colossal building projects throughout Judea, including his expansion of the Second Temple in Jerusalem (Herod's Temple), the construction of the port at Caesarea Maritima, the fortress at Masada and Herodium.