St Johnstown (County Donegal) (Parliament of Ireland constituency)
# St Johnstown (County Donegal) (Parliament of Ireland constituency)

St Johnstown was a borough constituency for St Johnston in County Donegal represented in the Irish House of Commons until 1800.

## Members of Parliament

| Election | First member | First party | | Second member | Second party |
| - | - | - | - | - | - |
| 1661 | James Galbraith | | | William Hamilton | |
| 1692 | John Forward | | | Charles Melville | |
| 1695 | Humphrey May | | | Henry Langford | |
| 1703 | Kilner Brasier | | | Charles Melville | |
| 1713 | James Topham | | | John Hamilton | |
| 1715 | James Topham | | | William Forward | |
| 1725 | Hon. Henry Hamilton | | | William Forward | |
| 1727 | Hon. George Hamilton | | | William Forward | |
| May 1761 | Ralph Howard | | | William Forward | |
| 1761 | William Talbot | | | William Forward | |
| 1768 | William Talbot | | | Ralph Howard | |
| 1769 | William Talbot | | | Hugh Howard | |
| 1776 | Robert Howard | | | Hugh Howard | |
| 1783 | Hon. Robert Howard | | | Hon. William Forward-Howard | |
| 1790 | Hon. Hugh Howard | | | Hon. William Forward-Howard | |
| 1801 | Constituency disenfranchised | Constituency disenfranchised | Constituency disenfranchised | Constituency disenfranchised | Constituency disenfranchised |
