Blakistonia bassi is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 2018 by Australian arachnologists Sophie Harrison, Michael Rix, Mark Harvey and Andrew Austin. The specific epithet bassi honours Daniel Bass for his research support.[1]
The species occurs in south-eastern South Australia. The type locality is Ashton in the Mount Lofty Ranges.[1]