The 
Khmer Empire was a powerful kingdom based in what is now 
Cambodia.  At times, it ruled over and/or vassalised parts of modern-day 
Laos, 
Thailand and 
Vietnam.  The empire's greatest physical legacy is 
Angkor, which was its capital.  Angkor bears testimony to the Khmer Empire's immense power and wealth, as well as the variety of belief systems that it patronised over time.  The empire's official religions included 
Hinduism, 
Mahayana and 
Theravada Buddhism.
Rulers
Chronological listing with reign, title and posthumous title(s), where known.
See also
Sources
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