Drongan, Stair and Rankinston was one of 32 electoral wards of East Ayrshire Council.
Created in 1999, the ward elected one councillor using the first-past-the-post voting electoral system.
The ward was a Labour Co-operative stronghold as the party successfully held the seat at every election.
In 2007, the ward was abolished and replaced by the multi-member Doon Valley ward as council elections moved to a proportional voting system – the single transferable vote – following the implementation of the Local Governance (Scotland) Act 2004.
The ward took in a rural area around the villages of Drongan, Rankinston and Stair and took in an area in the west of East Ayrshire next to its border with South Ayrshire Council.