Ricinocarpos trachyphyllus is a species of flowering plant in the family Euphorbiaceae and is endemic to eastern Australia.

Ricinocarpos trachyphyllus is a monoecious or dioecious shrub that typically grows to up to a height 2 m (6 ft 7 in), its young branchlets densely covered with greyish-white, star-shaped hairs.

[2] Ricinocarpos trachyphyllus was first formally described in 2007 by David Halford and Rodney Henderson in the journal Austrobaileya from a specimen collected near Surat by Anthony Bean.

[2] This species grows in open woodland or forest, or in mallee, mulga and spinifex, in two disjunct areas in Queensland and New South Wales.

In Queensland it occurs between Charleville and Westmar and in New South Wales from near Cobar to Matakana.