The Start Local bicycling clubs in Australia page has links to bicycling clubs around the country.
There are pages for the areas within each state and territory around Australia.
If you’re a local looking to meet up with other cyclists, it could be a good first place to start. On the other hand, if you’re a visitor to Australia who happens to be a keen cyclist, you might want to find a cycling club for a ride or to meet others if you’re travelling in the country for a while and want to enjoy some bike rides with locals.
There’s an updated list of new bike clubs added as well as the link pages.
If you try this page and find it useful, I’d love to know in the comments.