Ki Ki is a small town on the Dukes Highway (A8), the main link between Adelaide and Melbourne, in South Australia.
It has a small post office, parking bay, town hall, engineering business, "Ki Ki Engineering", and is surrounded by large pastoral properties. At the 2006 census, Ki Ki had a population of 193. Its postcode is 5261.
Ki Ki had a Congregational Church, which was built in 1910 and closed in 1969.
Ki Ki has an active tennis club, which belongs to the Border-Downs Tennis Association.
Australian rules footballer Martin Mattner grew up in the town.