Dasyhesma forrestii is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 2004 by Australian entomologist Elizabeth Exley.
The specific epithet forrestii refers to a favoured food plant.
Measurements of female specimens are: body length 8.0 mm, wing length 5.0 mm. Males: body length 6.0 mm, wing length 5.0 mm. The head and mesosoma are black; the metasoma is a variable orange-brown with black markings (females) or dark brown (males).
The species occurs in the Gascoyne region of Western Australia. The type locality is 7 km north of Boologooroo homestead.
The adults are flying mellivores. Flowering plants visited by the bees include Verticordia forrestii.