Pedley Acacia trinervata commonly known as three-veined wattle,[4] is a species of flowering plant in the family Fabaceae and the subgenus Phyllodineae.

It is a tall shrub with angular branchlets, bright yellow flowers and grows in New South Wales.

The phyllodes are very narrowly elliptic to linear with a pointed sharp tip, 1.5–5 cm (0.59–1.97 in) long, 1–3 mm (0.039–0.118 in) wide and 2 or 3 prominent longitudinal veins.

Flowering occurs from March to June and the fruit is a papery to thinly leathery pod, slightly swollen above the seed, minutely hairy, 6–12 cm (2.4–4.7 in) long and 1–3 mm (0.039–0.118 in) wide.

[4] Three-veined wattle grows in open forest on sandstone and shale and is endemic to New South Wales and restricted to western Sydney and the lower Blue Mountains.