The Shire of Cardinia is a local government area in Victoria, Australia, in the south-east of Melbourne between Western Port and the Yarra Ranges on the outskirts of Melbourne.

The areas within the present-day boundaries of Cardinia Shire were originally parts of the Cranbourne and Berwick districts, which were incorporated in 1860 and 1862 respectively.

Cardinia Shire Council is divided into nine wards:[5] Beacon Hills, Bunyip, Central, Henty, Officer, Pakenham Hills, Ranges, Toomuc and Westernport.

Before October 2020 the shire had three wards: Central, Ranges and Port.

In addition, the Mobile Library visits the suburbs of Bunyip, Garfield, Tynong, Beaconsfield, Upper Beaconsfield, Gembrook, Maryknoll, Cockatoo, Lang Lang and Koo Wee Rup.