Olearia hectorii is a species of flowering plant in the daisy family Asteraceae.

[1] Members of the genus Olearia, commonly known as daisy-bushes or tree daisies, are found in New Zealand, Australia, and New Guinea.

Although originally published under the name Olearia hectori, hectorii is the correct epithet under the ICBN (ST Louis) Art.

As with most other Asteraceae, the tiny flowers are borne in dense clusters known as pseudanthia, which are produced on short, hairy stems from near the leaf axils.

[6] This plant is now classified under the New Zealand Threat Classification System as being Nationally Endangered.