Cassinia wilsoniae is a species of flowering plant in the family Asteraceae and is endemic to a small area near the border between South Australia and Victoria.

It is an erect shrub with densely hairy branchlets, needle-shaped leaves, and corymbs of twenty to fifty ochre-coloured flower heads.

Mostly between twenty and fifty heads are arranged in corymbs 20–70 mm (0.79–2.76 in) in diameter.

[2] Cassinia wilsoniae was first formally described in 2009 by Anthony Edward Orchard in Australian Systematic Botany from specimens collected in Wyperfeld National Park in 2004.

[3] Cassinia wilsoniae is only known from Wyperfeld National Park, Lake Albacutya and a single collection in South Australia.