Udayadityavarman II is a king of Angkor which reigned of 1050 with 1066 after J. - C.

He is the successor of Suryavarman I er. He built the temple of the Baphûon to honor Shiva, although certain sculptures are dedicated to the Bouddha. He also completed the construction of the tank of Baray Occidental and built in his medium the small island of Mebon Occidental. During its reign, several attempts at rebellions were repressed by its general, Sangrama.

It is reign of Udayadityawarman II which date the stele of Sdok Kok Thom (1053), which is an basic element in the epigraphy khmère.