Ōhara temple ruins (大原廃寺跡, Ōhara Haiji ato) is an archeological site with the ruins of a Hakuhō period Buddhist temple located in the Ohara neighborhood of the city of Kurayoshi, Tottori prefecture, in the San'in region of Japan.

The central foundation stone is 2.9 x 2.8 meters wide, and has a 65-cm diameter hole in the center, making it one of the largest in the San'in region.

A stone wall presumed to be an earthen altar was also found, and roof tiles were unearthed nearby.

Based on the style of the roof tiles, it is estimated that the pagoda was built before the latter half of the 8th century.

The artifacts discovered are preserved in the Kurayoshi Museum, and the ruins of the temple are open to the public.