Banksia hewardiana is a species of openly branched shrub that is endemic to Western Australia.

It has linear, serrated leaves with sharply pointed teeth, head of up to sixty lemon-yellow flowers and oblong follicles.

Groups of between thirty-five and sixty sweetly-scented flowers are borne in a head on a side branch about 20 mm (0.79 in) long.

Flowering occurs from July to November and the follicles are oblong to egg-shaped, 8–10 mm (0.31–0.39 in) long and sparsely hairy.

[2][3] This species was first formally described in 1856 by Carl Meissner who gave it the name Dryandra hewardiana and published the description in de Candolle's Prodromus Systematis Naturalis Regni Vegetabilis from specimens collected by James Drummond.