Leptospermum namadgiensis Lyne Gaudium namadgiense is a species of small shrub that is endemic to areas near the border between New South Wales and the Australian Capital Territory.

The flowers are borne singly or in pairs on short side shoots, and are white, sometimes with a pink tinge and 6–10 mm (0.24–0.39 in) wide.

Flowering mainly occurs from December to January and the fruit is a hairy capsule 2–2.5 mm (0.079–0.098 in) wide with the remains of the sepals attached but that falls from the plant after the seeds are released.

[2][3] This species was first formally described in 1993 by Andrew M. Lyne who gave it the name Leptospermum namadgiensein the journal Telopea from specimens he collected on Mt Scabby in 1992.

[3] This tea-tree usually grows in shrubland and woodland on exposed rocky ridges and mountaintops in the Namadgi National Park and Scabby Range Nature Reserve at altitudes between 1,500 and 1,820 m (4,920 and 5,970 ft).