Synothele longbottomi is a species of mygalomorph spider in the Barychelidae family. It is endemic to Australia. It was described in 1994 by Australian arachnologist Robert Raven. The specific epithet longbottomi honours Alan Longbottom, collector of specimens for the Western Australian Museum.[1]
The species occurs in south-west Western Australia in marri and jarrah woodland habitats. The type locality is Mount Cooke on the Darling Scarp near Jarrahdale.[1]