Lord Deputy Of Ireland

He deputised prior to 1523 for the Viceroy of Ireland. The plural form is Lords Deputy.

Lordship of Ireland

• Sir Thomas de la Dale (1365–1366)
• Sir Thomas Mortimer (1382–1383)
• Thomas FitzGerald, 7th Earl of Kildare (1454–1459)
• William Sherwood (1462)
• Thomas FitzGerald, 7th Earl of Desmond (1463–1467)
• John Tiptoft, 1st Earl of Worcester (1467–1468)
• Thomas FitzGerald, 7th Earl of Kildare (1468–1475)
• William Sherwood (1475–1477)
• Gerald FitzGerald, 8th Earl of Kildare (1477)
• Henry Grey, 4th (7th) Baron Grey of Codnor (1478–1479)
• Gerald FitzGerald, 8th Earl of Kildare (1479–?1494)
• Walter Fitzsimon, Archbishop of Dublin (1492)
• Robert Preston, 1st Viscount Gormanston (1493–1494)
• Edward Poynings (1494–1496)
• Gerald FitzGerald, 8th Earl of Kildare (1496–1513)
• Gerald FitzGerald, 9th Earl of Kildare (1513–1518)
• Sir Maurice Fitzgerald
• Thomas Howard, Earl of Surrey (1520–1522)
• Piers Butler, 8th Earl of Ormonde (1522–1524)
• Gerald FitzGerald, 9th Earl of Kildare (1524–1529)
• Sir William Skeffington (1529–1532)
• Gerald FitzGerald, 9th Earl of Kildare (1532–1534)
• Sir William Skeffington (1534–1535)
• Leonard Grey, 1st Viscount Grane (1536–1540)

Kingdom of Ireland

• Anthony St Leger (1540–1548)
• Edward Bellingham (1548–1549)
• Lord Justices (1549–1550)
• Anthony St Leger (1550–1551)
• James Croft (1551–1552)
• Lord Justices (1552–1553)
• Anthony St Leger (1553–1556)
• Thomas Radclyffe, 3rd Earl of Sussex (1556–1558) (Lord Lieutenant 1560–1564)
• Sir Nicholas Arnold (1564–1565)
• Sir Henry Sidney (1565–1571) (1575–1578)
• William FitzWilliam (1571–1575) (1588–1594)
• Arthur Grey, 14th Baron Grey de Wilton (1580–1582)
• Sir John Perrot (1584–1588)
• William Russell, 1st Baron Russell of Thornhaugh (1594–1597)
• Thomas Burgh, 7th Baron Strabolgi (1597)
• Robert Devereux, 2nd Earl of Essex (Lord Lieutenant 1599)
• Charles Blount, Baron Mountjoy (later 1st Earl of Devonshire) (1600–1603) (Lord Lieutenant 1603–1604)
• Sir George Cary (1603–1604)
• Arthur Chichester, 1st Baron Chichester (1605–1616)
• Sir Oliver St John (1616–1622)
• Henry Cary, 1st Viscount Falkland (1622–1629)
• Thomas Wentworth, 1st Earl of Strafford (1632–1640)
• Christopher Wandesford (1640)
• Robert Sidney, 2nd Earl of Leicester (1640–1643) (Lord Lieutenant)
• James Butler, 1st Duke of Ormond (1644–1650) (Lord Lieutenant)
• Henry Ireton (1650–1651)
• Charles Fleetwood (1652–1657)
• Henry Cromwell (1657–1658) (Lord Lieutenant 1658–1659)
• Edmund Ludlow (1659–1660)
• George Monck, 1st Duke of Albemarle (1660–1661)
• James Butler, 1st Duke of Ormonde (1662–1668)
• Thomas Butler, 6th Earl of Ossory (1668–1669)
• John Robartes, 1st Earl of Radnor (1669–1670)
• John Berkeley, 1st Baron Berkeley of Stratton (1670–1672)
• Arthur Capell, 1st Earl of Essex (1672–1677)
• James Butler, 1st Duke of Ormonde (1677–1682)
• Richard Butler, 1st Earl of Arran (1682–1684)
• James Butler, 1st Duke of Ormonde (1684–1685)
• Lords Justices: 24 February 1685
• Henry Hyde, 2nd Earl of Clarendon (1685–1687)
• Richard Talbot, 1st Earl of Tyrconnell (1687–1688)

The title subsequently became Lord Lieutenant of Ireland, with the holder also known informally as the Viceroy.