Dublin North is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects 4 deputies (Teachtaí Dála, commonly known as TDs). The method of election is the single transferable vote form of proportional representation (PR-STV).
It was first created for the 1923 general election with 8 seats, but was abolished for the 1937 general election. The constituency was re-created by the Electoral (Amendment) Act 1980 for the 1981 general election, largely replacing the former Dublin County North constituency.
It is located in the northern area of County Dublin, and is made up of the Balbriggan and Malahide electoral areas of Fingal County Council and the north and west Swords electoral areas (Brackenstown and Seatown). Settlements in this constituency also include Lusk, Rush, Donabate, Skerries and Portmarnock.
The Electoral (Amendment) Act 2009 defines the constituency as:
- "In the county of Fingal the electoral divisions of:
- Balbriggan Rural, Balbriggan Urban, Ballyboghil, Balscadden, Clonmethan, Donabate, Garristown, Hollywood, Holmpatrick, Kinsaley, Lusk, Malahide East, Malahide West, Rush, Skerries, Swords-Glasmore, Swords-Lissenhall, Swords-Seatown, Swords Village."