Udayadityavarman I

{{Short description|King of Angkor from 1001-1002 CE}}

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Udayadityavarman I was the king of Angkor who reigned from 1001 to 1002 AD.{{cite book |last1=Anthony Chalcraft |title=Southeast Asia: A Historical Encyclopedia from Angkor Wat to East Timor |publisher=Emerald Group Publishing Limited |isbn=1576077705}}

Maternal nephew of his predecessor Jayavarman V (968 – 1001), he reigned only for a few months. His death triggered a nine-year civil war. His successor in Yaśodharapura is a prince of the royal family named Jayavirahvarman (1002 – 1010).