Cryptandra propinqua is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern continental Australia.

It is a shrub with many branches, more or less linear leaves, and spike-like clusters of white, tube-shaped flowers.

There are narrowly triangular stipules 1.0–1.5 mm (0.039–0.059 in) long and fused at the base of the petioles.

[2][3][4] Cryptandra propinqua was first formally described in 1837 by Eduard Fenzl in Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel from an unpublished description by Allan Cunningham.

[7] In 2007, Jürgen Kellermann and Frank Udovicic described two subspecies of C. propinqua in the Proceedings of the Linnean Society of New South Wales, and the names are accepted by the Australian Plant Census: This cryptandra grows in sandy soil over sandstone, and is widespread between Springsure, Inglewood and Morven in Queensland, mainly on the ranges and inland in New South Wales, and in southern South Australia.