Dublin Mid-West is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas.

The constituency elects five deputies (Teachtaí Dála, commonly known as TDs) on the system of proportional representation by means of the single transferable vote (PR-STV).

Dublin Mid-West contains the areas of Clondalkin, Lucan, Palmerstown, Rathcoole, Newcastle and Saggart.

[3] The Electoral (Amendment) Act 2023 defines the constituency as:[4] the electoral divisions of Clondalkin-Cappaghmore, Clondalkin-Dunawley, Clondalkin-Moorfield, Clondalkin-Rowlagh, Clondalkin Village, Lucan-Esker, Lucan Heights, Lucan-St. Helens, Newcastle, Rathcoole, Saggart; the electoral divisions of Clondalkin-Cappaghmore, Clondalkin-Dunawley, Clondalkin-Moorfield, Clondalkin-Rowlagh, Clondalkin Village, Lucan-Esker, Lucan Heights, Lucan-St. Helens, Newcastle, Palmerston Village, Palmerston West, Rathcoole, Saggart; Note: The columns in this table are used only for presentational purposes, and no significance should be attached to the order of columns.

^ *: Outgoing TD A by-election was held in the constituency on 29 November 2019 to fill the seat vacated by Frances Fitzgerald on her election to the European Parliament in May 2019.