|Mayor (1 vacancy)
|Due to the resignation of the Mayor, a supplementary election was held to fill the vacancy of Mayor for The Flinders Ranges Council.
|5pm, Monday 21 December 2020
|Opening of nominations
|Thursday 14 January 2021
|12 noon, Thursday 28 January 2021
|Close of roll
|The voters roll for this supplementary election closed at 5pm on Monday 21 December 2020.
|At the close of nominations at 12 noon on Thursday 28 January 2021, a total of one nomination was received and accepted for the supplementary election:
|Greg FLINT was elected unopposed as the only nominated candidate for the position of Mayor for The Flinders Ranges Council. No ballot was necessary.