Isopogon dubius, commonly known as pincushion coneflower,[2] is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia.

The flowers are arranged in sessile, more or less spherical heads 40–50 mm (1.6–2.0 in) in diameter with many hairy, egg-shaped involucral bracts at the base.

[2][3][4] Pincushion coneflower was first formally described in 1830 by Robert Brown who gave it the name Petrophile dubia in the Supplementum to his Prodromus Florae Novae Hollandiae et Insulae Van Diemen from specimens collected in 1827 near the Swan River, by Charles Fraser.

[5][6] In 1917 George Claridge Druce changed the name to Isopogon dubius in The Botanical Exchange Club and Society of the British Isles Report for 1916.

[7][8] Isopogon dubius grows in woodland and heath, mainly on the Darling Range from near Wongan Hills to Narrogin in the Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain in the south-west of Western Australia.