This is a list of members elected to the Irish House of Commons in 1661. The parliament sat until 1666 and consisted of almost 300 MPs at a time during this period.
| Name | Constituency | Notes | |
|---|---|---|---|
| Ennobled and replaced 1665 by Roger Boyle, 2nd Earl of Orrery. | |||
| Dungannon | |||
| Dungarvan | |||
| Carlow | |||
| Died and replaced in 1662 by his son Francis Butler | |||
| Replaced 1662 by George Lane, 1st Viscount Lanesborough. | |||
| Died and replaced 1662 by Henry Blennerhassett | |||
| County Meath | |||
| By-election May 1661 | |||
| County Clare | |||
| Ballynakill | |||
| County Limerick | |||
| Bannow | |||
| Speaker | |||
| Mallow | |||
| Succeeded to peerage 1661 and replaced by James, Lord Annesley | |||
| Elected April 1661. Died May 1661. | |||
| Askeaton | |||
| County Galway | |||
| Mallow | |||
| County Louth | |||
| Strabane | Expelled and replaced 1665 by Sir Peter Harvey | ||
| By-election May 1661 | |||
| Died 1661 and replaced by Sir John Perceval, 1st Baronet. Perceval died 1665 and was replaced by John St Ledger. | |||
| April 1661 |