Diocirea ternata is a plant in the figwort family, Scrophulariaceae and is endemic to a small area near Balladonia in Western Australia.

It is a low shrub with a restricted distribution but which often occurs in large numbers, forming a dense ground cover.

[2] Diocirea ternata was first formally described by taxonomist Bob Chinnock in Eremophila and allied genera: a monograph of the plant family Myoporaceae in 2007[1][2] from a specimen collected 70 kilometres (40 mi) west of Balladonia.

[2] Diocirea ternata has a restricted distribution in a small area near Balladonia in the Coolgardie biogeographic region where it grows in woodland on clay loam.

[2] Diocirea ternata has been classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.