Kadina is a town located on the Yorke Peninsula of South Australia, approximately 144 kilometres north-northwest of the state capital of Adelaide. The largest town of the Peninsula, Kadina is one of the three Copper Triangle towns famous for their shared copper mining history. The three towns are known as "Little Cornwall" for the significant number of immigrants from Cornwall that worked at the mines in the late 19th century.
It is about 20 kilometres (12 mi) north-east of Moonta and 8 kilometres (5.0 mi) east of the port town of Wallaroo. There are 6 suburbs making up Kadina's township, each being a distinct historic locality or hamlet. These are: Jericho, Jerusalem, Matta Flat, New Town and Wallaroo Mines as well as central Kadina itself. Kadina East was previously a gazetted suburb east of Kadina's centre, later merged into Kadina itself.
The name "Kadina" is thought to be derived from Kadiyinya, an (indigenous) Narungga tribe word meaning 'Lizard Plain'.
The town is the base for local radio station Gulf FM, broadcasting at 89.3 FM.