Dún Laoghaire and Rathdown (Dáil constituency)

Dún Laoghaire and Rathdown was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1948 to 1977. The constituency elected 3 (and later 4) deputies (Teachtaí Dála, commonly known as TDs) to the Dáil, on the system of proportional representation by means of the single transferable vote (PR-STV).

History and boundaries
The constituency was located on the south coast of County Dublin.