Toodyay Naturalists Club was founded in 1968 in Toodyay, Western Australia.
The inaugural meeting was held at St Stephen's Anglican Church Hall.
In 1979, the club published a book about the local environment.
It was the main mover in the creation of the Pioneers Arboretum.
In 2004, it conducted a symposium on James Drummond.
It celebrated 30 years of activity in 1998, and 40 in 2008.