Archidendron lucyi is a small tree in the legume family Fabaceae.

The native range extends from eastern Malesia to the Solomon Islands and northeastern Australia.

The cream coloured stamens are 3–5 cm long and form the showiest part of the flowers.

[4] This species was first described by German-born Australian botanist Ferdinand von Mueller, based on material collected by John Dallachy near Rockingham Bay in northeast Queensland.

[5] Various other specimens of this species have subsequently been collected and described as new by other botanists, with the result that there are now 3 homotypic and 10 heterotypic synonyms for the taxon.