Daviesia tortuosa is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia.

It is a spreading, glabrous shrub with tangled, zigzagging branchlets, sharply-pointed, narrowly elliptic phyllodes, and yellow flowers with faint orange markings.

[2][3] Daviesia tortuosa was first formally described in 1995 by Michael Crisp in Australian Systematic Botany from specimens he collected near Lake Grace in 1978.

[5] This daviesia grows in kwongan heath roughly between Kulin, Dumbleyung and Lake Grace in the Avon Wheatbelt and Mallee biogeographic regions of south-western Western Australia.

[2][3] Daviesia speciosa is classified as "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[3] meaning that it is poorly known and known from only a few locations but is not under imminent threat.