Andersonia longifolia is a species of flowering plant in the family Ericaceae and is endemic to a restricted area in the south-west of Western Australia.

Andersonia longifolia is a sprawling to upright shrub that typically grows to a height of 10–60 cm (3.9–23.6 in).

[4][5] In 1962, Leslie Watson raised the variety to species status as Andersonia longifolia in the Kew Bulletin.

[7] This species of Andersonia grows in sandy loam on breakaways and ridges south of Busselton in the Jarrah Forest bioregion of south-western Western Australiai.

[2][3] Andersonia longifolia is listed as "Priority Two" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[3] meaning that it is poorly known and from one or a few locations.