Pseudotyrannochthonius australiensis is a species of pseudoscorpion in the Pseudotyrannochthoniidae family. It is endemic to Australia. It was described in 1966 by Austrian arachnologist Max Beier.
The species occurs in eastern New South Wales. The type locality is Edith, some 11 km south-east of Oberon.
The pseudoscorpions are terrestrial predators that inhabit plant litter.