|Member of the European Parliament|
30 February 2012 – 24 May 2014
|Lord Mayor of Dublin|
15 June 2009 – 26 June 2010
|Preceded by||Eibhlin Byrne|
|Succeeded by||Gerry Breen|
|Dublin City Councillor|
14 July 2003 – 22 February 2012
|Constituency||North Inner City|
|Born||Emer Anne Malone|
3 September 1962
Drogheda, Louth, Ireland
|Political party||Labour Party|
|Spouse(s)||Joe Costello (m. 1994)|
|Relations||Mary Moran (Sister)|
|Alma mater||University College Dublin|
Emer Anne Costello (née Malone; born 3 September 1962) is an Irish Labour Party politician who served as a Member of the European Parliament (MEP) for the Dublin constituency from 2012 to 2014, Lord Mayor of Dublin from 2009 to 2010 and a Dublin City Councillor for the North Inner City area from 2003 to 2012.
She was first co-opted onto Dublin City Council as a member for the North Inner City area in 2003 to replace her husband, Joe Costello, who resigned following the end of the dual mandate. She was elected in 2004 and re-elected in June 2009. She was elected Lord Mayor of Dublin by a unanimous vote of the city council at its annual meeting on 15 June 2009, with the support of Fine Gael and the Green Party.
- "Emer Costello". ElectionsIreland.org. Retrieved 7 September 2008.
- "Emer Costello – Biography". Labour.ie. Archived from the original on 15 May 2011. Retrieved 27 May 2011.
- Anderson, Nicola (28 February 2011). "Half the room went wild". Irish Independent. Retrieved 6 June 2011.
- "Prionsias De Rossa to step down as MEP". RTÉ News. Retrieved 16 January 2012.
| Lord Mayor of Dublin
Proinsias De Rossa
| Member of the European Parliament for Dublin