Hylaeus flavojugatus, or Hylaeus (Prosopisteron) flavojugatus, is a species of bee in the family Colletidae and subfamily Hylaeinae. It is endemic to Australia. It was described by British-American entomologist Theodore Dru Alison Cockerell in 1912.

Description Female body length is about 5.5 mm. Integumental colouration is mainly black, with yellow markings.

Distribution and habitat The species occurs in eastern mainland Australia. The type locality is Como, New South Wales.

Behaviour The adults are flying mellivores.

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