Rajadhiraj

Rajadhiraj (, ) is mentioned in the Pali chronicle Jinakalamali as a monarch of the early Dvaravati polity. He is recorded as ruling over Ayojjhapura, which is referred to as a metropolitan polity in the Rāmaññadesa, located north of Lavapura of Lavo. which is recorded in Chinese sources as Qiān Zhī Fú.

Based on the identification of Ayojjhapura with Si Thep—corresponding to Qiān Zhī Fú in Chinese sources—the reign of Rajadhiraj may be situated before the city's decline in 946 and, more specifically, according to the Jinakalamali, his son Manohanaraj's reign was contemporaneous with Anuruddha of Kamalanka and Camadevi of Haripuñjaya, which dated around the late 7th century;