Teucrium reidii is a species of flowering plant in the family Lamiaceae, and is endemic to north-western South Australia.

It is a shrub with egg-shaped leaves with blunt teeth on the edges, and white flowers arranged in spike-like groups.

Teucrium reidii is a shrub that typically grows to a height of up to 2 m (6 ft 7 in) and has stems that are square in cross-section but with rounded edges.

The five sepals are about 6 mm (0.24 in) long, joined at the base for about half their length, and densely hairy on their outer surface.

[2] Teucrium reidii was first formally described in 2008 by Hellmut R. Toelken and Darrell Dean Cunningham in the Journal of the Adelaide Botanic Gardens from specimens collected by W.S.