Isanavarman I

Īśānavarman(Iśânasena) or Yīshēnàxiāndài(Chinese: 伊奢那先代) was a king of the Cambodian kingdom of Chenla in 7th century, which would later become the Khmer Empire. He was the son of, and successor to Mahendravarman.

After Mahendravarman's death, Isanavarman took Isanapura as his capital. The Sambor Prei Kuk historical complex has been identified as Isanapura, the 7th century capital of Chenla. The main temples at Sambor Prei Kuk are said to have been founded by King Isanavarman I.

The Book of Sui, compiled in 636, states that at the beginning of the 7th century, Zhēnlà was ruled by one Yīshēnàxiāndài (Īśānavarman) (伊奢那先代). Inscription at Prasat Toc, Prasat Bayang, Vat Chakret, Kdei Ang Chumnik and Sambor Prei Kuk is attributed to the reign of Isanavarman I. The latest inscription attributed to him has been dated to 627 (549 Saka), while the only dated inscription attributed to his successor, Bhavavarman II, is of 639.

Ma Duanlin described King Ishanavarman's "sumptuous court" at Ishanapura, with the king wearing a crown of gold with precious stones, pearl pendants, and attended by five great ministers. Inscriptions to his reign may be found at Kdei Ang (AD 667), Roban Romas, Kuk Prah Kot, Wat Chakret, and Wat Po. The claimed authority over Tamrapura, Cakrankapura, Amoghapura and Bhimapura. Besides the future King Bhavavarman II, a second son, Shivadatta, was governor of Jyesthapura.