Geijera linearifolia, commonly known as oilbush or sheepbush,[2] is a species of shrub in the family Rutaceae and is endemic to southern Australia.

It has simple linear to oblong leaves, much-branched cymes of greenish-white flowers, and fruit containing a shiny black seed.

[2][3][4][5] Oilbush was first formally described in 1824 by de Candolle who gave it the name Eriostemon linearifolius and published the description in his treatise Prodromus Systematis Naturalis Regni Vegetabilis.

[8] Geijera linearifolia grows on rocky limestone on flats and around the edge of salt lakes in woodland and dry scrub.

Geijera linearifolia is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.