Phoberus cyrtus is a species of hide beetle in the subfamily Troginae discovered by Erwin Haaf in 1953.

[2][3] Within the genus Phoberus, P. cyrtus is most similar to P. fumarius and P. sulcatus, and researchers have often confused the three hide beetle species for each other.

Male P. cyrtus beetles have two bladelike protrusions and rows of hooks between their genitalia's median lobes and parameres, which enable them to more effectively grasp onto and copulate with females.

[3] P. cyrtus lives within Lesotho, southern Botswana, and the South African provinces of Eastern Cape, KwaZulu-Natal, Mpumalanga, and North West.

[3] This ground-based beetle is a detritivore and survives by consuming keratin from shed, excreted, or rotting animal material.