Wahlenbergia caryophylloides is a small herbaceous plant in the family Campanulaceae native to Western Australia.
The single-stemmed annual herb typically grows to a height of 0.1to. It blooms between May and September producing white-blue-purple flowers.
The species is found on the edges of swamps, lagoons and mud flats in the Kimberley and Pilbara regions of Western Australia where it grows in sandy soils.