Dodonaea pinnata, commonly known as pinnate hop bush, is a species of plant in the family Sapindaceae and is endemic to the Sydney region of New South Wales. It is a spreading, dioecious shrub with imparipinnate leaves with mostly 10 to 16 leaflets, flowers arranged singly with 4 or 5 sepals and 8 to 10 stamens, and 4-winged capsules with leathery wings.

Dodonaea pinnata is a spreading, dioecious shrub that typically grows to a height of up to 1.5 m (4 ft 11 in). Its leaves are imparipinnate, 14–38 mm (0.55–1.50 in) long on a petiole 4.0–5.5 mm (0.16–0.22 in) long. There are usually ten to sixteen densely hairy, narrowly egg-shaped leaflets, sometimes with the narrower end towards the base, the edges rolled under. The flowers are arranged singly on a pedicel 3.5–3.6 mm (0.14–0.14 in) long, with four or five egg-shaped sepals, 1.6–4.5 mm (0.063–0.177 in) long and eight to ten stamens. The ovary is hairy and the fruit is a four-winged capsule, 14–21 mm (0.55–0.83 in) long and 15.5–18 mm (0.61–0.71 in) wide with leathery wings 3.5–6 mm (0.14–0.24 in) wide.

Dodonaea pinnata was first formally described in 1809 by James Edward Smith in The Cyclopaedia. The specific epithet (pinnata) means 'pinnate', referring to the leaves.

This species of Dodonaea is restricted to the Hawkesbury and Nepean river systems near Sydney, where it grows in forest on soils derived from sandstone.