Edmund Butler, 11th Viscount Mountgarret (27 July 1745 – 16 July 1793) was an Irish peer and politician.
He was the son of Edmund Butler, 10th Viscount Mountgarret and Charlotte Bradstreet, daughter of Sir Simon Bradstreet, 1st Bart. He married with Henrietta Butler, daughter of Somerset Hamilton Butler, 1st Earl of Carrick on 7 October 1768 and had issued. He was a Member of Parliament (MP) in the Irish House of Commons for Kilkenny County from 1776 to 1779.
Lord Mountgarret and Henrietta Butler had five son:
| Parliament of Ireland | ||
|---|---|---|
| Preceded by Hon. John Ponsonby James Agar |
Member of Parliament for Kilkenny County with Hon. John Ponsonby 1776 – 1779 |
Succeeded by Hon. John Ponsonby Joseph Deane |
| Peerage of Ireland | ||
| Preceded by Edmund Butler |
Viscount Mountgarret 1779 – 1793 |
Succeeded by Edmund Butler |