An election to all 40 seats on Dún Laoghaire–Rathdown County Council was held on 7 June 2024 as part of the 2024 Irish local elections.

[1] Dún Laoghaire–Rathdown is divided into 6 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).

[3] The following councillors are not seeking re-election: In April 2024, Orli Degani, who had been selected by the Social Democrats to contest the Dún Laoghaire LEA was dropped from the ticket.

^ †: Outgoing councillor coopted subsequent to the 2019 election.

A complete recount took place in Blackrock resulting in newcomer Dan Carson beating Independent Cormac Lucey for the last seat by just two votes.