Melaleuca linearis, commonly known as narrow-leaved bottlebrush, is a plant in the myrtle family, Myrtaceae and is endemic to New South Wales and Queensland in Australia.

It is a medium-sized shrub with narrow leaves with a rigid point, and red flower spikes in late spring or early summer.

Melaleuca linearis is a shrub growing to 3 metres (10 ft) tall with grey, hard, fibrous bark.

Flowering occurs from late spring to early summer and is followed by fruits that are woody capsules, 3.8–8.2 millimetres (0.1–0.3 in) long.

[19] A 2012 paper in the journal Muelleria suggested that if Callistemon were to be subsumed into Melaleuca, there would be "no morphological characters to uniquely define it (Melaluca)".

[20] Indeed, in a 2014 paper in Taxon, Craven and others proposed transferring Beaufortia, Calothamnus, Conothamnus, Eremaea, Lamarchea, Phymatocarpus and Regelia to Melaleuca, a change largely accepted by Plants of the World Online, but not by any Australian authority.