# List of Dáil by-elections

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This is a list of by-elections to Dáil Éireann, the house of representatives of the Oireachtas, the Irish legislature. By-elections in Ireland occur to fill vacant seats which can be caused by the death, resignation, disqualification or expulsion of a sitting Teachta Dála (member of parliament). Under the Electoral (Amendment) Act 2011, the writ for the by-election must be issued within six months of the vacancy.
There have been 138 by-elections since 1923, to fill 140 vacancies. 93 of these were caused by the death of a sitting Teachta Dála (TD). There were no by-elections during the 3rd, 7th, 9th, 11th, 22nd, 25th and 26th Dála. The longest period without a by-election was almost 10 years between 1984 and 1994. The largest number of by-elections on one day was on 11 March 1925, when seven constituencies filled nine vacancies caused by the National Party's split from Cumann na nGaedheal. Those seven by-elections included two which filled two vacancies, via the single transferable vote. All the other by-elections have used its single-winner analogue, the alternative vote.
Twenty-five TDs who were elected at a by-election were not subsequently re-elected at a general election. The only person twice elected at by-elections was Thomas Hennessy.

## First and Second Dáil

The First Dáil was established by Sinn Féin members returned in the 1918 election to the House of Commons of the United Kingdom. Convention in the Commons was that the writ for a by-election be moved by a party colleague of the vacating member, which was impossible for the abstentionist Sinn Féin. There were three by-elections held for Westminster constituencies vacated by Unionist members during the lifetime of the First Dáil, all of whom took their seats in Westminster.
| Winner | Party | Constituency | Date | Outgoing | Party | Reason for vacancy | Notes |
| Hugh T. Barrie | U | North Londonderry | 4 March 1919 | Hugh Anderson | U | Resignation | This was the only by-election contested by Sinn Féin, Patrick McGilligan losing. |
| George Hanna | Ind U | East Antrim | 27 May 1919 | Robert McCalmont | U | Appointed commander of the Irish Guards | |
| William Jellett | U | Dublin University | 28 July 1919 | Arthur Samuels | U | Appointed to the High Court of Justice in Ireland | |
The Second Dáil comprised those returned in the 1921 elections to the House of Commons of Southern Ireland and the House of Commons of Northern Ireland. There were no by-elections to either body during the lifetime of the Second Dáil.

## By-elections since 1923

By-elections in which seats changed parties are indicated with a grey background.
| Dáil | Constituency | Vacancy | Vacancy | Vacancy | Vacancy | By-election | By-election | By-election | By-election |
| Dáil | Constituency | Outgoing | Party | Party | Cause | Date | Winner | Party | Party |
| 4th | Dublin South | Michael Hayes | | CnaG | Elected for two constituencies; chose to represent the National University | 27 October 1923 | Hugh Kennedy | | CnaG |
| 4th | National University | Eoin MacNeill | | CnaG | Elected for two constituencies; chose to represent Clare. | 3 November 1923 | Patrick McGilligan | | CnaG |
| 4th | Dublin South | Philip Cosgrave | | CnaG | Death | 12 March 1924 | James O'Mara | | CnaG |
| 4th | Dublin County | Michael Derham | | CnaG | Death | 19 March 1924 | Batt O'Connor | | CnaG |
| 4th | Limerick | Richard Hayes | | CnaG | Resignation | 28 May 1924 | Richard O'Connell | | CnaG |
| 4th | Cork East | Thomas O'Mahony | | CnaG | Death | 18 November 1924 | Michael Noonan | | CnaG |
| 4th | Dublin South | Hugh Kennedy | | CnaG | Incompatible office: appointed as Chief Justice | 18 November 1924 | Seán Lemass | | Rep |
| 4th | Mayo North | Henry Coyle | | CnaG | Disqualification | 18 November 1924 | John Madden | | Rep |
| 4th | Cork Borough | Alfred O'Rahilly | | CnaG | Resignation | 19 November 1924 | Michael Egan | | CnaG |
| 4th | Donegal | Peter J. Ward | | CnaG | Resignation | 20 November 1924 | Denis McCullough | | CnaG |
| 4th | Carlow–Kilkenny | Seán Gibbons | | CnaG | Resignation | 11 March 1925 | Thomas Bolger | | CnaG |
| 4th | Cavan | Seán Milroy | | CnaG | Resignation | 11 March 1925 | John Joe O'Reilly | | CnaG |
| 4th | Dublin North | Francis Cahill | | CnaG | Resignation | 11 March 1925 | Patrick Leonard | | CnaG |
| 4th | Dublin North | Seán McGarry | | CnaG | Resignation | 11 March 1925 | Oscar Traynor | | Rep |
| 4th | Dublin South | Daniel McCarthy | | CnaG | Resignation | 11 March 1925 | Thomas Hennessy | | CnaG |
| 4th | Leitrim–Sligo | Thomas Carter | | CnaG | Resignation | 11 March 1925 | Samuel Holt | | Rep |
| 4th | Leitrim–Sligo | Alexander McCabe | | CnaG | Resignation | 11 March 1925 | Martin Roddy | | CnaG |
| 4th | Mayo North | Joseph McGrath | | CnaG | Resignation | 11 March 1925 | Michael Tierney | | CnaG |
| 4th | Roscommon | Henry Finlay | | CnaG | Resignation | 11 March 1925 | Martin Conlon | | CnaG |
| 4th | Dublin County | Darrell Figgis | | Ind | Death | 18 February 1926 | William Norton | | Lab |
| 4th | Leix–Offaly | Seán McGuinness | | Rep | Disqualification | 18 February 1926 | James Dwyer | | CnaG |
| 5th | Dublin County | Kevin O'Higgins | | CnaG | Death (assassination) | 24 August 1927 | Gearóid O'Sullivan | | CnaG |
| 5th | Dublin South | Constance Markievicz | | FF | Death | 24 August 1927 | Thomas Hennessy | | CnaG |
| 6th | Carlow–Kilkenny | W. T. Cosgrave | | CnaG | Elected for two constituencies; chose to represent Cork Borough | 3 November 1927 | Denis Gorey | | CnaG |
| 6th | Dublin North | James Larkin | | IWL | Disqualification due to bankruptcy | 3 April 1928 | Vincent Rice | | CnaG |
| 6th | Dublin North | Alfie Byrne | | Ind | Incompatible office: elected to Seanad Éireann | 14 March 1929 | Thomas F. O'Higgins | | CnaG |
| 6th | Leitrim–Sligo | Samuel Holt | | FF | Death | 7 June 1929 | Seán Mac Eoin | | CnaG |
| 6th | Longford–Westmeath | James Killane | | FF | Death | 13 June 1930 | James Geoghegan | | FF |
| 6th | Dublin County | Bryan Cooper | | CnaG | Death | 9 December 1930 | Thomas Finlay | | CnaG |
| 6th | Kildare | Hugh Colohan | | Lab | Death | 29 June 1931 | Thomas Harris | | FF |
| 8th | Dublin University | James Craig | | Ind | Death | 13 October 1933 | Robert Rowlette | | Ind |
| 8th | Dublin County | Batt O'Connor | | FG | Death | 17 June 1935 | Cecil Lavery | | FG |
| 8th | Galway | Martin McDonogh | | FG | Death | 19 June 1935 | Eamon Corbett | | FF |
| 8th | Galway | Patrick Hogan | | FG | Death | 13 August 1936 | Martin Neilan | | FF |
| 8th | Wexford | Osmond Esmonde | | FG | Death | 17 August 1936 | Denis Allen | | FF |
| 10th | Dublin South | James Beckett | | FG | Death | 6 June 1939 | John McCann | | FF |
| 10th | Galway West | Seán Tubridy | | FF | Death | 30 May 1940 | John J. Keane | | FF |
| 12th | Kerry South | Fionán Lynch | | FG | Incompatible office: appointed as a Judge | 10 November 1944 | Donal O'Donoghue | | FF |
| 12th | Clare | Patrick Burke | | FG | Death | 4 December 1945 | Patrick Shanahan | | FF |
| 12th | Dublin North-West | Seán T. O'Kelly | | FF | Incompatible office: elected as President | 4 December 1945 | Vivion de Valera | | FF |
| 12th | Kerry South | Frederick Crowley | | FF | Death | 4 December 1945 | Honor Crowley | | FF |
| 12th | Mayo South | Micheál Clery | | FF | Incompatible office: appointed as County Registrar of Dublin | 4 December 1945 | Bernard Commons | | CnaT |
| 12th | Wexford | Richard Corish | | Lab | Death | 4 December 1945 | Brendan Corish | | Lab |
| 12th | Cork Borough | William Dwyer | | Ind | Resignation | 14 June 1946 | Patrick McGrath | | FF |
| 12th | Dublin County | Patrick Fogarty | | FF | Death | 29 October 1947 | Seán MacBride | | CnaP |
| 12th | Tipperary | William O'Donnell | | CnaT | Death | 29 October 1947 | Patrick Kinane | | CnaP |
| 12th | Waterford | Michael Morrissey | | FF | Death | 29 October 1947 | John Ormonde | | FF |
| 13th | Donegal East | Neal Blaney | | FF | Death | 7 December 1948 | Neil Blaney | | FF |
| 13th | Cork West | Timothy J. Murphy | | Lab | Death | 15 June 1949 | William J. Murphy | | Lab |
| 13th | Donegal West | Brian Brady | | FF | Death | 16 November 1949 | Patrick O'Donnell | | FG |
| 14th | Limerick East | Daniel Bourke | | FF | Death | 26 June 1952 | John Carew | | FG |
| 14th | Mayo North | P. J. Ruttledge | | FF | Death | 26 June 1952 | Phelim Calleary | | FF |
| 14th | Waterford | Bridget Redmond | | FG | Death | 26 June 1952 | William Kenneally | | FF |
| 14th | Dublin North-West | A. P. Byrne | | Ind | Death | 12 November 1952 | Thomas Byrne | | Ind |
| 14th | Cork East | Seán Keane | | Lab | Death | 18 June 1953 | Richard Barry | | FG |
| 14th | Wicklow | Thomas Brennan | | FF | Death | 18 June 1953 | Mark Deering | | FG |
| 14th | Galway South | Frank Fahy | | FF | Death | 21 August 1953 | Robert Lahiffe | | FF |
| 14th | Cork Borough | Thomas F. O'Higgins | | FG | Death | 3 March 1954 | Stephen Barrett | | FG |
| 14th | Louth | James Coburn | | FG | Death | 3 March 1954 | George Coburn | | FG |
| 15th | Limerick West | David Madden | | FG | Death | 13 December 1955 | Michael Colbert | | FF |
| 15th | Kerry North | Johnny Connor | | CnaP | Death | 29 February 1956 | Kathleen O'Connor | | CnaP |
| 15th | Dublin North-East | Alfie Byrne | | Ind | Death | 30 April 1956 | Patrick Byrne | | Ind |
| 15th | Leix–Offaly | William Davin | | Lab | Death | 30 April 1956 | Kieran Egan | | FF |
| 15th | Cork Borough | Patrick McGrath | | FF | Death | 2 August 1956 | John Galvin | | FF |
| 15th | Carlow–Kilkenny | Thomas Walsh | | FF | Death | 14 November 1956 | Martin Medlar | | FF |
| 15th | Dublin South-West | Peadar Doyle | | FG | Death | 14 November 1956 | Noel Lemass | | FF |
| 16th | Dublin North-Central | Colm Gallagher | | FF | Death | 14 November 1957 | Frank Sherwin | | Ind |
| 16th | Galway South | Patrick Beegan | | FF | Death | 30 May 1958 | Anthony Millar | | FF |
| 16th | Dublin South-Central | Jack Murphy | | Ind | Resignation | 25 June 1958 | Patrick Cummins | | FF |
| 16th | Clare | Éamon de Valera | | FF | Incompatible office: elected as President | 22 July 1959 | Seán Ó Ceallaigh | | FF |
| 16th | Dublin South-West | Bernard Butler | | FF | Death | 22 July 1959 | Richie Ryan | | FG |
| 16th | Meath | James Griffin | | FF | Death | 22 July 1959 | Henry Johnston | | FF |
| 16th | Carlow–Kilkenny | Joseph Hughes | | FG | Death | 23 June 1960 | Patrick Teehan | | FF |
| 16th | Sligo–Leitrim | Stephen Flynn | | FF | Death | 1 March 1961 | Joseph McLoughlin | | FG |
| 17th | Dublin North-East | Jack Belton | | FG | Death | 30 May 1963 | Paddy Belton | | FG |
| 17th | Cork Borough | John Galvin | | FF | Death | 19 February 1964 | Sheila Galvin | | FF |
| 17th | Kildare | William Norton | | Lab | Death | 19 February 1964 | Terence Boylan | | FF |
| 17th | Roscommon | James Burke | | FG | Death | 8 July 1964 | Joan Burke | | FG |
| 17th | Galway East | Michael Donnellan | | CnaT | Death | 3 December 1964 | John Donnellan | | FG |
| 17th | Cork Mid | Dan Desmond | | Lab | Death | 10 March 1965 | Eileen Desmond | | Lab |
| 18th | Kerry South | Honor Crowley | | FF | Death | 7 December 1966 | John O'Leary | | FF |
| 18th | Waterford | Thaddeus Lynch | | FG | Death | 7 December 1966 | Fad Browne | | FF |
| 18th | Cork Borough | Seán Casey | | Lab | Death | 9 November 1967 | Seán French | | FF |
| 18th | Limerick West | James Collins | | FF | Death | 9 November 1967 | Gerry Collins | | FF |
| 18th | Clare | William Murphy | | FG | Death | 14 March 1968 | Sylvester Barrett | | FF |
| 18th | Wicklow | James Everett | | Lab | Death | 14 March 1968 | Godfrey Timmins | | FG |
| 18th | Limerick East | Donogh O'Malley | | FF | Death | 22 May 1968 | Desmond O'Malley | | FF |
| 19th | Dublin South-West | Seán Dunne | | Lab | Death | 4 March 1970 | Seán Sherwin | | FF |
| 19th | Kildare | Gerard Sweetman | | FG | Death | 14 April 1970 | Patrick Malone | | FG |
| 19th | Longford–Westmeath | Patrick Lenihan | | FF | Death | 14 April 1970 | Patrick Cooney | | FG |
| 19th | Donegal–Leitrim | Patrick O'Donnell | | FG | Death | 2 December 1970 | Patrick Delap | | FF |
| 19th | Dublin County South | Kevin Boland | | FF | Resignation | 2 December 1970 | Larry McMahon | | FG |
| 19th | Cork Mid | Paddy Forde | | FF | Death | 2 August 1972 | Gene Fitzgerald | | FF |
| 20th | Monaghan | Erskine H. Childers | | FF | Incompatible office: elected as President | 27 November 1973 | Brendan Toal | | FG |
| 20th | Cork North-East | Liam Ahern | | FF | Death | 13 November 1974 | Seán Brosnan | | FF |
| 20th | Galway North-East | Michael F. Kitt | | FF | Death | 4 March 1975 | Michael P. Kitt | | FF |
| 20th | Galway West | Johnny Geoghegan | | FF | Death | 4 March 1975 | Máire Geoghegan-Quinn | | FF |
| 20th | Mayo West | Henry Kenny | | FG | Death | 12 November 1975 | Enda Kenny | | FG |
| 20th | Donegal North-East | Liam Cunningham | | FF | Death | 10 June 1976 | Paddy Keaveney | | IFF |
| 20th | Dublin South-West | Noel Lemass | | FF | Death | 10 June 1976 | Brendan Halligan | | Lab |
| 21st | Cork City | Patrick Kerrigan | | Lab | Death | 7 November 1979 | Liam Burke | | FG |
| 21st | Cork North-East | Seán Brosnan | | FF | Death | 7 November 1979 | Myra Barry | | FG |
| 21st | Donegal | Joseph Brennan | | FF | Death | 6 November 1980 | Clement Coughlan | | FF |
| 23rd | Dublin West | Richard Burke | | FG | Resignation | 25 May 1982 | Liam Skelly | | FG |
| 23rd | Galway East | Johnny Callanan | | FF | Death | 20 July 1982 | Noel Treacy | | FF |
| 24th | Donegal South-West | Clement Coughlan | | FF | Death | 13 May 1983 | Cathal Coughlan | | FF |
| 24th | Dublin Central | George Colley | | FF | Death | 23 November 1983 | Tom Leonard | | FF |
| 24th | Laois–Offaly | Bernard Cowen | | FF | Death | 14 June 1984 | Brian Cowen | | FF |
| 27th | Dublin South-Central | John O'Connell | | FF | Resignation | 9 June 1994 | Eric Byrne | | DL |
| 27th | Mayo West | Pádraig Flynn | | FF | Resignation | 9 June 1994 | Michael Ring | | FG |
| 27th | Cork North-Central | Gerry O'Sullivan | | Lab | Death | 10 November 1994 | Kathleen Lynch | | DL |
| 27th | Cork South-Central | Pat Cox | | Ind | Resignation | 10 November 1994 | Hugh Coveney | | FG |
| 27th | Wicklow | Johnny Fox | | Ind | Death | 29 June 1995 | Mildred Fox | | Ind |
| 27th | Donegal North-East | Neil Blaney | | IFF | Death | 2 April 1996 | Cecilia Keaveney | | FF |
| 27th | Dublin West | Brian Lenihan Snr | | FF | Death | 2 April 1996 | Brian Lenihan Jnr | | FF |
| 28th | Limerick East | Jim Kemmy | | Lab | Death | 11 March 1998 | Jan O'Sullivan | | Lab |
| 28th | Dublin North | Ray Burke | | FF | Resignation | 11 March 1998 | Seán Ryan | | Lab |
| 28th | Cork South-Central | Hugh Coveney | | FG | Death | 23 October 1998 | Simon Coveney | | FG |
| 28th | Dublin South-Central | Pat Upton | | Lab | Death | 27 October 1999 | Mary Upton | | Lab |
| 28th | Tipperary South | Michael Ferris | | Lab | Death | 22 June 2000 | Séamus Healy | | Ind |
| 28th | Tipperary South | Theresa Ahearn | | FG | Death | 30 June 2001 | Tom Hayes | | FG |
| 29th | Kildare North | Charlie McCreevy | | FF | Resignation | 11 March 2005 | Catherine Murphy | | Ind |
| 29th | Meath | John Bruton | | FG | Resignation | 11 March 2005 | Shane McEntee | | FG |
| 30th | Dublin South | Séamus Brennan | | FF | Death | 5 June 2009 | George Lee | | FG |
| 30th | Dublin Central | Tony Gregory | | Ind | Death | 5 June 2009 | Maureen O'Sullivan | | Ind |
| 30th | Donegal South-West | Pat "the Cope" Gallagher | | FF | Incompatible office: elected to the European Parliament | 25 November 2010 | Pearse Doherty | | SF |
| 31st | Dublin West | Brian Lenihan Jnr | | FF | Death | 27 October 2011 | Patrick Nulty | | Lab |
| 31st | Meath East | Shane McEntee | | FG | Death | 27 March 2013 | Helen McEntee | | FG |
| 31st | Dublin West | Patrick Nulty | | Ind | Resignation | 23 May 2014 | Ruth Coppinger | | SP |
| 31st | Longford–Westmeath | Nicky McFadden | | FG | Death | 23 May 2014 | Gabrielle McFadden | | FG |
| 31st | Dublin South-West | Brian Hayes | | FG | Incompatible office: elected to the European Parliament | 10 October 2014 | Paul Murphy | | AAA |
| 31st | Roscommon–South Leitrim | Luke 'Ming' Flanagan | | Ind | Incompatible office: elected to the European Parliament | 10 October 2014 | Michael Fitzmaurice | | Ind |
| 31st | Carlow–Kilkenny | Phil Hogan | | FG | Resignation | 22 May 2015 | Bobby Aylward | | FF |
| 32nd | Cork North-Central | Billy Kelleher | | FF | Incompatible office: elected to the European Parliament | 29 November 2019 | Pádraig O'Sullivan | | FF |
| 32nd | Dublin Fingal | Clare Daly | | I4C | Incompatible office: elected to the European Parliament | 29 November 2019 | Joe O'Brien | | GP |
| 32nd | Dublin Mid-West | Frances FitzGerald | | FG | Incompatible office: elected to the European Parliament | 29 November 2019 | Mark Ward | | SF |
| 32nd | Wexford | Mick Wallace | | I4C | Incompatible office: elected to the European Parliament | 29 November 2019 | Malcolm Byrne | | FF |
| 33rd | Dublin Bay South | Eoghan Murphy | | FG | Resignation | 8 July 2021 | Ivana Bacik | | Lab |
* 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 TDs who were never subsequently re-elected.
* 1 2 3 4 A single by-election to fill two vacancies in the same constituency.

## Vacancies not filled

When Pierce McCan died on 6 March 1919, his East Tipperary seat was left vacant at Westminster. In April 1919 a Dáil committee considering how to fill the vacancy considered allowing nomination by the Labour Party (which had stood aside in the 1918 election to avoid splitting the nationalist vote) before recommending that the Sinn Féin constituency organisation should nominate. However, in June 1919 the Dáil decided that "it was due to the memory of the late Pierce McCann that his place should not be filled at present". Later vacancies were also left unfilled; when Diarmuid Lynch resigned his seat in 1920, Arthur Griffith said "as the letter of resignation was addressed to the people of South-East Cork, the next step in the matter lay with the South-East Cork Executive of Sinn Fein". Asked in the Civil War about filling Third Dáil vacancies, W. T. Cosgrave as Chairman of the Provisional Government stated "the condition of the country scarcely warrants the holding of elections".
In the first Dáil, four Sinn Féin TDs represented two constituencies: Éamon de Valera, Arthur Griffith, Eoin MacNeill and Liam Mellowes. Ordinarily, this would prompt them to choose one constituency to represent, and to move a writ for a by-election in the other constituency.
| Dáil | Constituency | Outgoing TD | Party | Reason for vacancy | Date of vacancy | Date of dissolution |
| 1st | Tipperary East | Pierce McCan | SF | Death in prison | 6 March 1919 | 10 May 1921 |
| 1st | Cork South East | Diarmuid Lynch | SF | Resignation | 6 August 1920 | 10 May 1921 |
| 1st | Cork Mid | Terence MacSwiney | SF | Death on hunger strike | 25 October 1920 | 10 May 1921 |
| 1st | Wexford North | Roger Sweetman | SF | Resignation | 27 January 1921 | 10 May 1921 |
| 2nd | Waterford–Tipperary East | Frank Drohan | SF | Resignation | 5 January 1922 | 16 June 1922 |
| 2nd | Dublin County | Frank Lawless | SF | Death | 16 April 1922 | 16 June 1922 |
| 2nd | Longford–Westmeath | Joseph McGuinness | SF | Death | 31 May 1922 | 16 June 1922 |
| 3rd | Waterford–Tipperary East | Cathal Brugha | AT-SF | Shot during the Civil War | 7 July 1922 | 9 August 1923 |
| 3rd | Mayo South–Roscommon South | Harry Boland | AT-SF | Shot during the Civil War | 1 August 1922 | 9 August 1923 |
| 3rd | Cavan | Arthur Griffith | PT-SF | Death | 12 August 1922 | 9 August 1923 |
| 3rd | Cork Mid, North, South, South East and West | Michael Collins | PT-SF | Shot during the Civil War | 22 August 1922 | 9 August 1923 |
| 3rd | Sligo–Mayo East | James Devins | AT-SF | Shot during the Civil War | 20 September 1922 | 9 August 1923 |
| 3rd | Mayo South–Roscommon | Daniel O'Rourke | PT-SF | Resignation | 29 November 1922 | 9 August 1923 |
| 3rd | Cork Mid, North, South, South East and West | Seán Hales | PT-SF | Shot during the Civil War | 7 December 1922 | 9 August 1923 |
| 3rd | Clare | Patrick Brennan | PT-SF | Resignation | 13 December 1922 | 9 August 1923 |
| 3rd | Clare | Seán Liddy | PT-SF | Resignation | 18 December 1922 | 9 August 1923 |
| 3rd | Tipperary Mid, North and South | Joseph MacDonagh | AT-SF | Death on hunger strike | 25 December 1922 | 9 August 1923 |
| 3rd | Sligo–Mayo East | Francis Ferran | AT-SF | Death in prison | 10 June 1923 | 9 August 1923 |
| 4th | Limerick | James Ledden | CnaG | Death | 19 January 1927 | 23 May 1927 |
| 6th | Carlow–Kilkenny | Peter de Loughry | CnaG | Death | 23 October 1931 | 16 February 1932 |
| 6th | Leix–Offaly | William Aird | CnaG | Death | 31 October 1931 | 29 January 1932 |
| 7th | Cork East | John Daly | CnaG | Death | 23 February 1932 | 2 January 1933 |
| 7th | Donegal | Frank Carney | FF | Death | 19 October 1932 | 2 January 1933 |
| 7th | Dublin County | Thomas Finlay | CnaG | Death | 22 November 1932 | 2 January 1933 |
| 8th | Cork West | James Burke | FG | Death | 10 September 1936 | 14 June 1937 |
| 8th | National University | Conor Maguire | FF | Appointment as High Court judge | 3 November 1936 | 14 June 1937 |
| 8th | Longford–Westmeath | James Geoghegan | FF | Appointment as Supreme Court judge | 23 December 1936 | 14 June 1937 |
| 9th | Cork West | Eamon Rice | FF | Death | 7 November 1937 | 27 May 1938 |
| 10th | Kilkenny | Denis Gorey | FG | Death | 20 February 1940 | 26 June 1943 |
| 10th | Wicklow | Séamus Moore | FF | Death | 14 June 1940 | 26 June 1943 |
| 10th | Cork South-East | Brook Brasier | FG | Death | 31 August 1940 | 26 June 1943 |
| 10th | Mayo North | John Munnelly | FF | Death | 18 October 1941 | 26 June 1943 |
| 10th | Cork Borough | Thomas Dowdall | FF | Death | 7 April 1942 | 26 June 1943 |
| 10th | Dublin South | Thomas Kelly | FF | Death | 20 April 1942 | 26 June 1943 |
| 10th | Sligo | Frank Carty | FF | Death | 10 September 1942 | 26 June 1943 |
| 10th | Cork Borough | Hugo Flinn | FF | Death | 28 January 1943 | 26 June 1943 |
| 10th | Cork South-East | Jeremiah Hurley | Lab | Death | 2 February 1943 | 26 June 1943 |
| 11th | Tipperary | Martin Ryan | FF | Death | 22 July 1943 | 30 May 1944 |
| 12th | Carlow–Kildare | James Hughes | FG | Death | 1 January 1948 | 12 January 1948 |
| 12th | Sligo | Martin Roddy | FG | Death | 8 January 1948 | 12 January 1948 |
| 13th | Galway West | Joseph Mongan | FG | Death | 12 March 1951 | 7 May 1951 |
| 13th | Wexford | John Esmonde | Ind | Resignation | 1 May 1951 | 7 May 1951 |
| 15th | Carlow–Kilkenny | Thomas Derrig | FF | Death | 19 November 1956 | 12 February 1957 |
| 16th | Wexford | Denis Allen | FF | Death | 29 March 1961 | 15 September 1961 |
| 16th | Carlow–Kilkenny | Francis Humphreys | FF | Death | 19 April 1961 | 15 September 1961 |
| 17th | Longford–Westmeath | Michael Kennedy | FF | Death | 14 February 1965 | 18 March 1965 |
| 18th | Wexford | James Kennedy | FF | Death | 13 September 1968 | 22 May 1969 |
| 18th | Tipperary South | Don Davern | FF | Death | 2 November 1968 | 22 May 1969 |
| 18th | Clare | Patrick Hogan | Lab | Death | 24 January 1969 | 22 May 1969 |
| 19th | Tipperary South | Patrick Hogan | FG | Death | 5 October 1972 | 5 February 1973 |
| 19th | Clare | Patrick Hillery | FF | Resignation on nomination as EC Commissioner | 6 January 1973 | 5 February 1973 |
| 20th | Dublin County South | Richard Burke | FG | Resignation on nomination as EC Commissioner | 25 January 1977 | 25 May 1977 |
| 20th | Dublin South-West | Declan Costello | FG | Resignation on nomination as High Court judge | 19 May 1977 | 25 May 1977 |
| 21st | Tipperary North | Michael O'Kennedy | FF | Resignation on nomination as EC Commissioner | 27 January 1981 | 21 May 1981 |
| 22nd | Cavan–Monaghan | Kieran Doherty | AHB | Death on hunger strike | 2 August 1981 | 27 January 1982 |
| 23rd | Galway West | Bill Loughnane | FF | Death | 18 October 1982 | 4 November 1982 |
| 24th | Donegal South-West | Cathal Coughlan | FF | Death | 21 June 1986 | 21 January 1987 |
| 25th | Sligo–Leitrim | Ray MacSharry | FF | Resignation on nomination as EC Commissioner | 25 January 1989 | 25 May 1989 |
| 25th | Dublin South-Central | Frank Cluskey | Lab | Death | 7 May 1989 | 25 May 1989 |
| 30th | Dublin South | George Lee | FG | Resignation | 8 February 2010 | 1 February 2011 |
| 30th | Waterford | Martin Cullen | FF | Resignation | 24 March 2010 | 1 February 2011 |
| 30th | Donegal North-East | Jim McDaid | FF | Resignation | 2 November 2010 | 1 February 2011 |
| 30th | Dublin South-Central | Seán Ardagh | FF | Resignation | 28 January 2011 | 1 February 2011 |
| 31st | Galway West | Brian Walsh | FG | Resignation | 14 January 2016 | 3 February 2016 |
| 32nd | Cork North-Central | Dara Murphy | FG | Resignation | 3 December 2019 | 14 January 2020 |
| 33rd | Laois–Offaly | Barry Cowen | FF | Elected to the European Parliament | 16 July 2024 | 8 November 2024 |
| 33rd | Carlow–Kilkenny | Kathleen Funchion | SF | Elected to the European Parliament | 16 July 2024 | 8 November 2024 |
| 33rd | Clare | Michael McNamara | Ind | Elected to the European Parliament | 16 July 2024 | 8 November 2024 |
| 33rd | Dublin Bay North | Aodhán Ó Ríordáin | Lab | Elected to the European Parliament | 16 July 2024 | 8 November 2024 |
| 33rd | Clare | Joe Carey | FG | Resignation due to illness | 27 August 2024 | 8 November 2024 |

## TDs who died after the dissolution of the Dáil

Outgoing TDs who died after the dissolution of the Dáil but before the following election did not create a vacancy, as there was no Dáil in being at the time of their death.
| Dáil | Constituency | Outgoing TD | Party | Party | Date of dissolution | Date of death | Date of general election |
| 6th | Leitrim–Sligo | Patrick Reynolds | | Cumann na nGaedheal | 29 January 1932 | 14 February 1932 | 16 February 1932 |
| 12th | Kilkenny | Eamonn Coogan | | Fine Gael | 12 January 1948 | 22 January 1948 | 4 February 1948 |