The Peerage of Ireland is the term used for those peers created by British monarchs in their capacity as Lord or King of Ireland. Before 1801, Irish Peers had the right to sit in the Irish House of Lords, but after the Union in 1801, Irish peers, like those of Scotland, only elected Representative Peers - twenty-eight in number - to the House of Lords. This practice ended with the creation of the Irish Free State in 1922 Irish Peerages continued to be created for some time after 1801 as a way of creating peerages which did not grant a seat in the House of Lords. The last to be granted was one for George Curzon in 1899.

In the following table of Irish peers, higher or equal titles in the other peerages are listed. Also, if the peer holds a lower title in the Peerages of England, Great Britain, or the United Kingdom, and therefore sat by such a peerage in the House of Lords, such a lower title is listed.

Dukes in the Peerage of Ireland
TitleCreationOther titles
The Duke of Leinster1766Viscount Leinster of Taplow in the Peerage of Great Britain
The Duke of Abercorn1866Marquess of Abercorn in the Peerage of Great Britain
 
Marquesses in the Peerage of Ireland
TitleCreationOther titles
The Marquess of Waterford1789Baron Tyrone in the Peerage of Great Britain
The Marquess of Downshire1789Earl of Hillsborough in the Peerage of Great Britain
The Marquess of Donegall1791Baron Fisherwick in the Peerage of Great Britain
The Marquess of Headfort1800Baron Kenlis in the Peerage of the U.K.
The Marquess of Sligo1800Baron Mont Eagle in the Peerage of the U.K.
The Marquess of Ely1801Baron Loftus in the Peerage of the U.K.
The Marquess Conyngham1816Baron Minster in the Peerage of the U.K.
The Marquess of Londonderry1816Earl of Vane in the Peerage of the U.K.
The Marquess of Ormonde1825Baron Ormonde in the Peerage of the U.K.
 
Earls in the Peerage of Ireland
TitleCreationOther titles
The Earl of Waterford1446Earl of Shrewsbury in the Peerage of England;
Earl Talbot in the Peerage of Great Britain
The Earl of Cork and Orrery1620; 1660Baron Boyle of Marston in the Peerage of Great Britain
The Earl of Westmeath1621 
The Earl of Desmond1622Earl of Denbigh in the Peerage of England
The Earl of Meath1627Baron Chaworth in the Peerage of the U.K.
The Earl of Cavan1647 
The Earl of Drogheda1661 
The Earl of Granard1684Baron Granard in the Peerage of the U.K.
The Earl of Kerry and Shelburne1722; 1753Marquess of Lansdowne in the Peerage of Great Britain
The Earl of Darnley1725Baron Clifton in the Peerage of England
The Earl of Egmont1733Baron Lovel and Holland in the Peerage of Great Britain
The Earl of Bessborough1739Baron Ponsonby of Sysonby in the Peerage of Great Britain
The Earl of Carrick1748Baron Butler in the Peerage of the U.K.
The Earl of Shannon1756Baron Carleton in the Peerage of Great Britain
The Earl of Lanesborough1756 
The Earl of Mornington1760Duke of Wellington in the Peerage of the U.K.
The Earl of Arran1762Baron Sudley in the Peerage of the U.K.
The Earl of Courtown1762Baron Saltersford in the Peerage of Great Britain
The Earl of Mexborough1766 
The Earl Winterton1766 
The Earl of Kingston1768 
The Earl of Roden1771 
The Earl of Lisburne1776 
The Earl of Clanwilliam1776Baron Clanwilliam in the Peerage of the U.K.
The Earl of Antrim1785 
The Earl of Longford1785Baron Silchester in the Peerage of the U.K.
The Earl of Portarlington1785 
The Earl of Mayo1785 
The Earl Annesley1789 
The Earl of Enniskillen1789Baron Grinstead in the Peerage of the U.K.
The Earl Erne1789Baron Fermanagh in the Peerage of the U.K.
The Earl of Lucan1795Baron Bingham in the Peerage of the U.K.
The Earl Belmore1797 
The Earl Castle Stewart1800 
The Earl of Donoughmore1800Viscount Hutchinson in the Peerage of the U.K.
The Earl of Caledon1800 
The Earl of Limerick1803Baron Foxford in the Peerage of the U.K.
The Earl of Clancarty1803Viscount Clancarty in the Peerage of the U.K.
The Earl of Gosford1806Baron Worlingham in the Peerage of the U.K.
The Earl of Rosse1806 
The Earl of Normanton1806Baron Mendip in the Peerage of Great Britain
The Earl of Kilmorey1822 
The Earl of Dunraven and Mountearl1822 
The Earl of Listowel1822Baron Hare in the Peerage of the U.K.
The Earl of Norbury1827 
The Earl of Ranfurly1831Baron Ranfurly in the Peerage of the U.K.
 
Viscounts in the Peerage of Ireland
TitleCreationOther titles
The Viscount Gormanston1478Baron Gormanston in the Peerage of the U.K.
The Viscount Mountgarret1550Baron Mountgarret in the Peerage of the U.K.
The Viscount Valentia1622 
The Viscount Dillon1622 
The Viscount Lumley1628Earl of Scarborough in the Peerage of England
The Viscount Massereene and Ferrard1660; 1797Baron Oriel in the Peerage of the U.K.
The Viscount Cholmondeley1661Marquess of Cholmondeley in the Peerage of the U.K.
The Viscount Charlemont1665 
The Viscount Downe1681Baron Dawnay in the Peerage of the U.K.
The Viscount Molesworth1716 
The Viscount Chetwynd1717 
The Viscount Boyne1717Baron Brancepth in the Peerage of the U.K.
The Viscount Grimston1719Earl of Verulam in the Peerage of the U.K.
The Viscount Gage1720Baron Gage of High Meadow in the Peerage of Great Britain
The Viscount Galway1727 
The Viscount Powerscourt1743Baron Powerscourt in the Peerage of the U.K.
The Viscount Ashbrook1751 
The Viscount Royston1754Earl of Hardwicke in the Peerage of Great Britain
The Viscount Southwell1776 
The Viscount De Vesci1776 
The Viscount Lifford1781 
The Viscount Bangor1781 
The Viscount Doneraile1785 
The Viscount Harberton1791 
The Viscount Hawarden1793 
The Viscount Mountjoy1796Marquess of Bute in the Peerage of Great Britain
The Viscount Monck1801Baron Monck in the Peerage of the U.K.
The Viscount Gort1816 
 
Barons in the Peerage of Ireland
TitleCreationOther titles
The Baron Kingsale and Courcy1310; 1397 
The Baron Dunboyne1324; 1541 
The Baron Dunsany1439; 1462 
The Baron Trimlestown1461 
The Baron Louth1541 
The Baron Inchiquin1543 
The Baron Digby of Geashill1620Baron Digby of Sherborne in the Peerage of Great Britain
The Baron Conway and Killultagh1712Marquess of Hertford in the Peerage of Great Britain
The Baron Carbery1715 
The Baron Aylmer1718 
The Baron Farnham1756 
The Baron Lisle1758 
The Baron Clive of Plassey1762Earl of Powis in the Peerage of the U.K.
The Baron Westcote of Balamere1776Viscount Cobham in the Peerage of Great Britain
The Baron MacDonald1776 
The Baron Kensington1776 
The Baron Newborough1776 
The Baron Massy1776 
The Baron Muskerry1781 
The Baron Hood of Catherington1782Viscount Hood in the Peerage of Great Britain
The Baron Sheffield1783Baron Stanley of Alderley in the Peerage of the U.K.
The Baron Kilmaine1789 
The Baron Auckland1789Baron Auckland in the Peerage of Great Britain
The Baron Waterpark1792 
The Baron Bridport of Cricket St Thomas1794Viscount Bridport in the Peerage of the U.K.
The Baron Graves1794 
The Baron Huntingfield1796 
The Baron Carrington of Bulcot Lodge1796Baron Carrington of Upton in the Peerage of Great Britain
The Baron Rossmore1796 
The Baron Hotham1797 
The Baron Crofton1797 
The Baron Ffrench1798 
The Baron Henley1799Baron Northington in the Peerage of the U.K.
The Baron Langford1800 
The Baron Dufferin and Clandeboye1800 
The Baron Henniker1800Baron Hartismere in the Peerage of the U.K.
The Baron Ventry1800 
The Baron Dunalley1800 
The Baron Clanmorris1800 
The Baron Ashtown1800 
The Baron Rendlesham1806 
The Baron Castlemaine1812 
The Baron Decies1812 
The Baron Talbot of Malahide1831 
The Baron Carew1834Baron Carew in the Peerage of the U.K.
The Baron Oranmore and Browne1836Baron Mereworth in the Peerage of the U.K.
The Baron Bellew1848 
The Baron Rathdonnel1868