Alphitonia petriei, commonly known as the white ash, is a rainforest tree in the family Rhamnaceae from eastern and northern Australia.

The trunk and larger branches bear fissured grey bark (darker brown in Queensland), and peeling or bruising of it gives off a strong scent of liniment,[3] which has been likened to oil of wintergreen.

Arranged alternately on the smaller branches, simple narrow leaves measure 7–15 cm (3–6 in) in length and are dark glossy green above and covered with fine white hairs underneath.

The tiny (0.5 cm diameter) creamy flowers have five petals and are found in panicles at the end of branchlets or between leaves.

Flowering occurs in September to November, followed by the production of globular dark fruit around 1 to 1.5 cm diameter from February to July.