Phnom Bok (Khmer: ប្រាសាទភ្នំបូក) is a hill in the northeast of Eastern Baray in Cambodia, with a prasat (temple) of the same name built on it. It is one of the "trilogies of mountains", each of which has a temple with similar layout. The creation of the temple is credited to the reign of Yasovarman I (889–910) between 9th and 10th centuries; established after he moved his capital to Angkor and named it Yasodharapura.