An election to all 18 seats on Sligo County Council was held on 7 June 2024 as part of the 2024 Irish local elections. County Sligo is divided into 3 local electoral areas (LEAs) to elect councillors for a five-year term of office on the electoral system of proportional representation by means of the single transferable vote (PR-STV).
The following councillors are not seeking re-election:
Fianna Fáil supplanted Fine Gael as the largest party in Sligo by gaining a seat at their expense in each of the Ballymote-Tubbercurry and the Sligo-Drumcliff LEAs. The party did lose a seat, however, in Sligo-Strandhill with the retirement of long-serving Rosaleen O'Grady to the Labour Party who regained a presence on the Council after an absence of 10 years.