This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Former and lost communities in Markham" – news · newspapers · books · scholar · JSTOR (October 2023) (Learn how and when to remove this message)

Former and lost communities in Markham lists communities that have disappeared in Markham, Ontario, because they were renamed or no longer exist.

• Australia – located in the intersection of 19th Avenue and Ninth Line and namely centred on Lot 31 on Concession 9 on the farm once owned by William Holden. A tannery was the only notable business besides farming.^[1] The name was unofficial and not found on any maps during its existence in the mid-1800.