| Name | Post held |
| Jack Lynch | Taoiseach |
| Erskine Childers | Tánaiste and Minister for Health |
| Neil Blaney | Minister for Agriculture and Fisheries (to: 7.5.1970 - dismissed) |
| James Gibbons | Minister for Defence (to: 9.5.1970) Minister for Agriculture and Fisheries (from: 9.5.1970) |
| Kevin Boland | Minister for Local Government and Minister for Social Welfare (to: 7.5.1970 - resigned) |
| Michael Moran | Minister for Justice (to: 5.5.1970 - resigned) |
| Patrick J. Hillery | Minister for External Affairs **(to: 3.1.1973 - resigned* Appointed European Commissioner * External Affairs changed to Foreign Affairs w.e.f. 3.3.71** |
| Brian J. Lenihan | Minister for Transport & Power (to: 3.1.1973) , Minister for External Affairs **(from: 3.1.1973) * External Affairs changed to Foreign Affairs w.e.f. 3.3.71** |
| Charles J. Haughey | Minister for Finance (to: 7.5.1970 - dismissed) |
| George Colley | Minister for Gaeltacht Minister for Industry and Commerce(to: 9.5.1970) Minister for Finance (from: 9.5.1970) |
| Joseph Brennan | Minister for Labour Minister for Social Welfare (from: 9.5.1970) |
| Patrick J. Lalor | Minister for Posts & Telegraphs (to: 9.5.1970) , Minister for Industry and Commerce(from: 9.5.1970) |
| Sean Flanagan | Minister for Lands |
| Pádraig Faulkner | Minister for Education |
| Robert Molloy | Minister for Local Government (from: 9.5.1970) |
| Desmond J. O'Malley | Minister for Justice (from: 7.5.1970) |
| Jerry Cronin | Minister for Defence (from: 9.5.1970) |
| Gerard Collins | Minister for Posts and Telegraphs (from: 9.5.1970) |
| Michael O'Kennedy | Minister for Transport and Power (from: 3.1.1973) Minister without portfolio 18.12.1972 - 3.1.73 |
- Single-party Fianna Fáil Government.
- Patrick J. Hillery was appointed as Ireland's EC Commissioner on 3.1.1973.
- The Government can change the name of a Department (i.e. in 1969, the Department of Agriculture became the Department of Agriculture and Fisheries and External Affairs changed to Foreign Affairs w.e.f. 3.3.71).
| Name | Post held |
| Paudge Brennan | Parl. Sec. to Minister for Local Government (to: 8.5.1970 - resigned) |
| Liam Cunningham | *Parl. Sec. to Minister for Local Government (from: 9.5.1970 - 5.2.73 and following a general election 2.3.73 - 14.3.73) |
| Des O'Malley | Parl. Sec. to the Taoiseach and Parl. Sec. to Minister for Defence * (both positions until 7.5.1970 - appointed as Minister for Justice) |
| David Andrews | Parl. Sec. to the Taoiseach and Parl. Sec. to Minister for Defence (from: 8.5.1970 - 5.2.73 and following a general election 2.3.73 - 14.3.73) |
| John Geoghegan | Parl. Sec. to Minister for Social Welfare (from: 9.5.1970 - 5.2.73 and following a general election 2.3.73 - 14.3.73) |
| Noel T. Lemass | Parl. Sec. to Minister for Finance |
| Jerry Cronin | Parl. Sec. to Minister for Agriculture and Fisheries (to: 9.5.1970 - appointed as Minister for Defence) |
| John Fahey | Parl. Sec. to Minister for Agriculture and Fisheries (from : 9.5.1970 - 5.2.73 and following a general election 2.3.73 - 14.3.73) |
| Robert Molloy | Parl. Sec. to Minister for Education (to: 9.5.1970 - appointed as Minister for Local Government) |
| Gerard Collins | Parl. Sec. to Minister for Industry & Commerce and the Gaeltacht (to: 9.5.1970 - appointed as Minister for Posts and Telegraphs) |
| Michael Kitt | Parl. Sec. to Minister for the Gaeltacht (from: 9.5.1970 - 5.2.73 and following a general election 2.3.73 - 14.3.73) |
| Michael O'Kennedy | Parl. Sec. to Minister for Education (from: 9.5.1970 to 3.1.1973 - appointed as Minister) |
| James Tunney | Parl. Sec. to Minister for Education (from: 3.1.1973 - 5.2.73 and following a general election 2.3.73 - 14.3.73) |
Single-party Fianna Fáil Government.
