Pimelea lyallii, commonly known as the southern sand daphne, is a species of small shrub of the family Thymelaeaceae.

Pimelea lyallii has a prostrate habit.

Its flowers are hairy and white, and grow in clusters.

[1] The species is endemic to New Zealand, and found only on the Foveaux Strait and Stewart Island / Rakiura coasts.

[1] Pimelea lyallii is classified as at risk under the New Zealand Threat Classification System (NZTCS) due to being naturally uncommon.