Samantaraja (IAST: Sāmantarāja, r. c. 7th century CE) was an Indian king belonging to the Chahamana dynasty of Shakambhari (modern Sambhar).
He ruled parts of present-day Rajasthan in north-western India.
[1] On the other hand, Historian R. B. Singh assigned Samanta's reign to the period c. 684-709 CE and identifies Manik Rai as Samantaraja, the 7th century Chahamana ruler of Shakambhari.
[2] The 1170 CE Bijolia rock inscription of his descendant Someshvara states that Samanta was born at Ahichchhatrapura in the gotra of sage Vatsa.
The medieval bardic legends state that Manik Rai restored the fortunes of the Chauhan (Chahamana) family by the grace of the goddess Shakambhari.