Wahlenbergia preissii is a small herbaceous plant in the family Campanulaceae native to Western Australia.
The slender, erect, annual herb typically grows to a height of 0.06to. It blooms between September and November producing blue-pink-white flowers.
The species is found among granite outcrops in the Mid West, Goldfields-Esperance, Wheatbelt and South West regions of Western Australia where it grows in sandy-loamy soils.
It was first described in 1848 by the Dutch botanist Willem Hendrik de Vriese.