Daeunsan is a mountain located in Onyang, Ulju County, Ulsan, South Korea.

It sits on the boundary between the districts of Oegwang-ri and Unhwa-ri in the province of South Gyeongsang Province.

Daeunsan has an elevation of 742 m (2,434 ft).

The mountain was previously named Bulgwangsan.

This South Korea location article is a stub.