Brachyhesma minya, or Brachyhesma (Microhesma) minya, is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 1975 by Australian entomologist Elizabeth Exley.
The specific epithet minya is an Aboriginal word from South Australia meaning "small".
Colouring is yellow with brown markings. Body length of males is 3.3 mm, wing length 2.1 mm; body length of females is 3.7 mm, wing length 2.6 mm.
The species occurs in South Australia. The type locality is the Gawler Ranges.
The adults are flying mellivores. Flowering plants visited by the bees include eucalypt species.