2014 Mayo County Council election

An election to all 30 seats on Mayo County Council was held in Ireland on 23 May 2014 as part of the 2014 Irish local elections, a decrease from 31 seats at the 2009 election. County Mayo was divided into four 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).

While Fine Gael remained the most popular party in Mayo in terms of vote share the party surrendered its previously held overall majority on Mayo County Council and lost 7 seats in the process to be reduced to 10 councillors. Several long-serving members lost their seats in the process and the Taoiseach's brother, Henry Kenny, was a near casualty in Castlebar. Fianna Fáil gained 3 seats in the election to return with 10 councillors, the same numbers as Fine Gael. Their gains came in Ballina, Castlebar and in Claremorris. The party missed out on an additional seat in West Mayo due to running too many candidates, transfer leakage and the fact that the previous incumbents had retired. Sinn Féin made modest gains by gaining a seat in Castlebar to add to their delegation, although the party was very close in Ballina. Independents garnered a large vote share in each LEA and increased their numbers to 7 seats.

Changes 2014–2019

 * † Castlebar - Fianna Fáil Councillor Lisa Chambers was elected to the 32nd Dáil for Mayo at the 2016 general election. Michael McLoughlin was co-opted to fill the vacancy on 14 March 2016.
 * †† West Mayo - Sinn Féin Councillor Rose Conway-Walsh was elected to the 25th Seanad in April 2016. Teresa Whelan was co-opted to fill the vacancy on 11 July 2016.
 * ††† Castlebar Sinn Féin Councillor Therese Ruane resigned her seat in December 2017 citing work commitments. Joe McHale was co-opted to fill the vacancy.
 * †††† Ballina Independent Councillor Gerry Ginty joined Peadar Tóibín's movement on 27 November 2018.