This is a list of results for the 2021 New South Wales local elections in Outer Sydney including the Central Coast, though the region is considered to be separate from Greater Sydney.
Outer Sydney and surrounds covers 22 local government areas (LGAs) (excluding the Central Coast), including Blue Mountains, Hawkesbury and Wollondilly. A further 10 LGAs are in the Inner Sydney region.
The Liberal Party did not endorse any candidates, including its five councillors elected in 2016.
Four councillors did not seek re-election:
Cumberland City Council is composed of five three-member wards, totalling 15 councillors. At the 2017 election, Labor won a majority with eight seats.
In 2017, Greystanes Ward councillor Greg Cummings was suspended from Labor, and was expelled from the party in October 2018. In September 2019, Granville Ward councillor Steve Christou left Labor to join Our Local Community.
The Liberal Party did not endorse any candidates, leading its incumbent councillors to contest as Independent Liberals.
Fairfield City Council is composed of two six-member wards, as well as a directly-elected mayor.
The Liberal Party did not endorse any candidates, including its three councillors elected in 2016.
The election was conducted by the Australian Election Company.
Although Frank Carbone and Dai Le formed their own groups, they have an alliance on council.
Georges River Council is composed of five three-member wards, totalling 15 councillors. At the 2017 election, Labor won a plurality with six seats.
The Liberal Party did not endorse any candidates, including its six councillors elected in 2017.
The election was conducted by the Australian Election Company.