Haplodrassus tortuosus is a species of spider in the family Gnaphosidae. It is endemic to South Africa.
Haplodrassus tortuosus is found only in the KwaZulu-Natal province of South Africa, specifically at the type locality of Howick.
The species is a free-living ground dweller that inhabits the Grassland biome at an altitude of 1,127 m above sea level.
Haplodrassus tortuosus is known only from females.
Haplodrassus tortuosus is listed as Data Deficient due to taxonomic reasons. More sampling is needed to collect male specimens and determine the species' full range.
The species was originally described by in 1923 as Drassodes tortuosus. In 2025, Yuri M. Marusik and transferred the species to the genus Haplodrassus.