Weeroona Island (formerly known as Port Flinders) is a locality in the Australian state of South Australia about 209 kilometres (130 miles) north of the state capital of Adelaide and about 9.5 kilometres (5.9 mi) northeast of the city of Port Pirie.

[4][1] Weeroona Island began as a private subdivision of land in the Hundreds of Pirie and Telowie.

The subdivision was originally named “Port Flinders” by its proponents, the Trustees of the Mount Remarkable Mining Company, in about 1853.

Boundaries were created for the locality in March 1997 and included the Weeroona Island Shack Site.

The locality’s name was changed to Weeroona Island in November 2013 following a display of “strong support from residents”.