A new species of ground spider, Coreodrassus boldgivi sp. nov., is diagnosed, illustrated and described based on a male specimen. The genus Coreodrassus itself is also recorded for Mongolia for the first time. The holotype was found in a woodland habitat within the semi-desert zone in Dornogovi Aimag, southeastern Mongolia. The new species is related to C. lancearius (Simon 1893) and differs from it by the shape of the male palp.
