Euoplos grandis, also known as the Toowoomba trapdoor spider, is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 2019 by Australian arachnologists Jeremy Wilson, and Michael Rix.[1]
The species occurs in south-east Queensland in the Darling Downs region. The type locality is west of Dalby in the Western Downs.[1]