Sydney United 58 Football Club is a semi-professional soccer club and current NSW NPL Champions based in Edensor Park, Sydney, New South Wales Australia. The club was formed as Sydney Croatia in 1958, by Croatian Australians in the area, but it was renamed in 1993 as Sydney United after having the name Sydney CSC for a season.

Croatian Australians are Australian citizens of Croatian ancestry. Croatia has been a source of migrants to Australia, particularly in the 1960s and 1970s. In 2021, around 200,000 people resident in Australia (0.6%) identified themselves as being born in Croatia or having Croatian ancestry.