Tyrannochthonius brooksi is a species of pseudoscorpion in the Chthoniidae family.

It was described in 1991 by Australian arachnologist Mark Harvey.

The specific epithet brooksi honours Darren Brooks, who collected some of the type specimens.

[1] The species occurs in the Cape Range of North West Australia.

[1][2] The arachnids are cave-dwelling, terrestrial predators.