Gaius hueyi is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 2018 by Australian arachnologists Michael Rix, Robert Raven and Mark Harvey.[1]
The species occurs in south-west Western Australia in the Esperance Plains bioregion. The type locality is Munglinup, some 620 km south-east of Perth.[1]