# List of members of the Oireachtas imprisoned since 1923

This is a list of members of the Oireachtas (National Parliament of Ireland) who served a prison sentence or were interned since 1923 in any jurisdiction before, during or after their time as a Teachta Dála (TD) or Senator.
| Name | Party | Term of office | Term of office | Prison time | Prison(s) | Reason | Notes |
| Henry Coyle | Cumann na nGaedheal | 1923 | May 1924 | 1924–27 | ? | Fraud (Bouncing cheques) | Disqualified from the Oireachtas as a result |
| Seán McGuinness | Republican | 1923 | October 1925 | 1925–26 | Mountjoy | Assaulting a Garda Sergeant | Disqualified from the Oireachtas as a result |
| Dominick Cafferky | Clann na Talmhan | 1943 | 1954 | early 1940s | Sligo Gaol | 1940s land agitation in Mayo | Later became a leading Dáil spokesman on penal reform |
| Bernard Commons | Clann na Talmhan | Dec 1945 | 1957 | early 1940s | Sligo Gaol | 1940s land agitation in Mayo | |
| James Larkin | Labour Party | 1927 | 1944 | 1940s | ? | Bankruptcy | |
| John Joe McGirl | Sinn Féin | 1957 | 1961 | 1946 | ? | IRA membership | |
| John Joe McGirl | Sinn Féin | 1957 | 1961 | 1957–62 | Mountjoy | Actions during the IRA Border Campaign | |
| Tomás Mac Giolla | Workers' Party | Nov 1982 | 1992 | 1956–62 | Mountjoy | IRA membership and actions during the IRA Border Campaign | |
| Proinsias De Rossa | Sinn Féin, Workers' Party, Democratic Left, Labour Party | Feb 1982 | 2002 | 1956–59 | Mountjoy, Curragh Camp | IRA membership and actions during the IRA Border Campaign | |
| Bernard Durkan | Fine Gael | 1981 | | 1967 | Mountjoy, Portlaoise | Contempt of Court for activities relating to a farmers protest | |
| Ruairí Ó Brádaigh | Sinn Féin, Republican Sinn Féin | 1957 | 1961 | Jan–Jun 1957 | Mountjoy | Failing to account for his activities and actions during the IRA Border Campaign | |
| Ruairí Ó Brádaigh | Sinn Féin, Republican Sinn Féin | 1957 | 1961 | Jun 1957–Sep 1958 | Curragh Camp | Interned | Escaped in September 1958 |
| Ruairí Ó Brádaigh | Sinn Féin, Republican Sinn Féin | 1957 | 1961 | Nov 1959–May 1960 | Mountjoy | Imprisoned under the Offences against the State Act | |
| Ruairí Ó Brádaigh | Sinn Féin, Republican Sinn Féin | 1957 | 1961 | Jan–Jun 1973 | Curragh Camp | Membership of the Provisional IRA | |
| Gerry Adams | Sinn Féin | 2011 | 2020 | 1972, 1973–76 | HMS Maidstone, Long Kesh | Membership of the Provisional IRA | Interned, but imprisoned for attempted escape |
| Paddy Agnew | Anti H-Block | 1981 | 1982 | 1973–76, 1977–86 | Portlaoise, Mountjoy, Crumlin Road, Maze | Illegal importation of arms on behalf of the Provisional IRA and membership of same | Elected to Dáil Éireann at the 1981 general election while in prison |
| Kieran Doherty | Anti H-Block | Jun 1981 | Aug 1981 | 1976–81 | Maze | Possession of firearms and explosives, and hijacking | Died on hunger strike in August 1981 |
| Martin Ferris | Sinn Féin | 2002 | 2020 | 1984–94 | Portlaoise | Illegal importation of arms on behalf of the Provisional IRA and membership of the same | |
| Dessie Ellis | Sinn Féin | 2011 | | 1982–90 | Portlaoise | Provisional IRA membership | |
| Tony Gregory | Independent | Feb 1982 | Jan 2009 | 1986 | Mountjoy | For activities during a campaign in support of Dublin inner city street traders | Spent 2 weeks in prison |
| Joe Costello | Labour | Nov 1982 | Feb 2016 | 1986 | Mountjoy | For activities during a campaign in support of Dublin inner city street traders | Spent one week in prison |
| Luke 'Ming' Flanagan | Independent | 2011 | 2014 | 1998 | Loughan House | Non payment of fines related to the Litter Pollution Act | Spent 3 weeks in prison |
| Liam Lawlor | Fianna Fáil | 1977 | 2002 | Jan 2001, Jan 2002, Feb 2002 | Mountjoy | Failure to cooperate with the Mahon Tribunal | |
| Joe Higgins | Socialist Party | 1997 | 2016 | Sep–Oct 2003 | Mountjoy | Actions during the Anti-Bin Tax Campaign | |
| Clare Daly | Socialist Party | 2011 | 2019 | Sep–Oct 2003 | Mountjoy | Actions during the Anti-Bin Tax Campaign | |
| Clare Daly | United Left | 2011 | 2019 | 7–9 pm, 9 December 2015 | Limerick Prison | Non-payment of fines | Fined €2,000 on 22 April 2015 for entering a restricted area at Shannon Airport on 22 July 2014 when protesting against U.S. Air Force landings. Sentenced to 30 days' imprisonment. |
| Ray Burke | Fianna Fáil | 1973 | 1998 | Jan–Jun 2005 | Arbour Hill | Falsifying tax returns | Mahon Tribunal stated that Burke was unambiguously "corrupt" |
| Francis O'Brien | Fianna Fáil | 1989 | 2011 | 2013–15 | Castlerea Prison | Demanding money with menaces | |
| Ned O'Keeffe | Fianna Fáil | 1982 | 2011 | 2014 | – | Falsifying expense claims | 7-month suspended sentence |
| Ivor Callely | Fianna Fáil | 1989 | 2011 | 2014–15 | Wheatfield Prison | Falsifying expense claims | 5 months |
| Mick Wallace | Independent | 2011 | 2019 | 2–4 pm, 9 December 2015 | Limerick Prison | Non-payment of fines | Same crimes and sentence as Clare Daly. |
| James Heffernan | Labour Party | 2011 | April 2016 | April–July 2019 | Cork Prison | Drunken assault on three gardaí | |
| James Heffernan | Social Democrats | 2011 | April 2016 | April–July 2019 | Cork Prison | Drunken assault on three gardaí | |