Iona is a bounded rural locality in Victoria, Australia, 73 kilometres (45 mi) south-east of Melbourne's Central Business District, located within the Shire of Cardinia local government area.

[1] Iona is part of the Cardinia Shire Council.

Bunyip South Post Office opened on 26 August 1898, was renamed Iona in 1905 and closed in 1977.

[2] St Josephs Catholic Church at Iona was opened on 16 December 1900 by the Reverend Father Gleeson.

[4] St Josephs Catholic School opened on 11 April 1915.