Lechenaultia longiloba, commonly named Irwin leschenaultia,[2] is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia.

It is a straggling, low-lying herb or subshrub with narrow, rather fleshy leaves, and pale yellow or green petals with deep pink or red wings.

Lechenaultia longiloba is a straggling, mostly glabrous, low-lying herb or subshrub that typically grows to a height of up to 30 cm (12 in), has few branches and often forms suckers.

[6] Irwin leschenaultia grows in sandy soil in heath and is found from Dongara to Mullewa in the Geraldton Sandplains biogeographic region of south-western Western Australia.

[2][3] This leschenaultia is listed as "Priority Four" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[2] meaning that it is rare or near threatened.