Iona is a bounded rural locality in Victoria, Australia. Its local government area is the Shire of Cardinia. At the 2011 Census, Iona and Vervale combined had a population of 363. Mainly vegetable growing i.e. potato, asparagus and dairy farming.
Bunyip South Post Office opened on 26 August 1898, was renamed Iona in 1905 and closed in 1977. St Josephs Catholic Church at Iona was opened on December 16,1900 by the Reverend Father Gleeson The original building was replaced in 1940 by the existing brick building. St Josephs Catholic School opened on April 11, 1915.