This is a list of people who have served as Lord Lieutenant of Oxfordshire. Since 1689, all Lords Lieutenant have also been Custos Rotulorum of Oxfordshire.
{| class="wikitable sortable"
|-a
! Name !! Date of appointment !! End date
|-
| Charles Brandon, 1st Duke of Suffolk || 1545 || 1545
|-
| William Parr, 1st Marquess of Northampton || 1552 || 1553
|-
| Sir Richard Blount || 1559 || 1561
|-
| Sir Francis Knollys || 1565 || 1565
|-
| Henry Norris, 1st Baron Norreys || 17 September 1586 || 27 June 1601
|-
| Sir Francis Knollys || 12 September 1586 || 19 July 1596
|-
| William Knollys, 1st Earl of Banbury || 4 November 1596 || 25 May 1632
|-
| Thomas Howard, 1st Earl of Berkshire || 26 March 1628 || 1642
|-
| William Fiennes, 1st Viscount Saye and Sele || 1642 || 1642
|-
| Henry Cary, 4th Viscount Falkland || 17 July 1660 || 2 April 1663
|-
| Edward Hyde, 1st Earl of Clarendon || 19 June 1663 || 11 March 1668
|-
| James Fiennes, 2nd Viscount Saye and Sele || 11 March 1668 || 15 March 1674
|-
| James Bertie, 1st Earl of Abingdon || 1 April 1674 || 21 November 1687
|-
| Edward Lee, 1st Earl of Lichfield || 5 December 1687 || 3 May 1689
|-
| James Bertie, 1st Earl of Abingdon || 3 May 1689 || 15 May 1697
|-
| Thomas Wharton, 1st Baron Wharton || 15 May 1697 || 11 June 1702
|-
| Montagu Venables-Bertie, 2nd Earl of Abingdon || 11 June 1702 || 8 February 1706
|-
| John Churchill, 1st Duke of Marlborough || 8 February 1706 || 17 May 1712
|-
| Montagu Venables-Bertie, 2nd Earl of Abingdon || 17 May 1712 || 14 October 1715
|-
| Francis Godolphin, 2nd Earl of Godolphin || 14 October 1715 || 26 January 1739
|-
| Charles Spencer, 3rd Duke of Marlborough || 26 January 1739 || 20 October 1758
|-
| George Spencer, 4th Duke of Marlborough || 21 March 1760 || 29 January 1817
|-
| George Parker, 4th Earl of Macclesfield ||10 May 1817 || 20 March 1842
|-
| George Spencer-Churchill, 6th Duke of Marlborough || 22 April 1842 || 1 July 1857
|-
| John Spencer-Churchill, 7th Duke of Marlborough || 25 August 1857 || 4 July 1883
|-
| Sir Henry Dashwood, 5th Baronet || 17 August 1883 || 23 June 1887
|-
| Victor Child Villiers, 7th Earl of Jersey || 23 June 1887 || 31 May 1915
|-
| Charles Spencer-Churchill, 9th Duke of Marlborough || 3 August 1915 || 30 June 1934
|-
| Vivian Smith, 1st Baron Bicester || 15 August 1934 || 26 November 1954
|-
| George Parker, 7th Earl of Macclesfield || 26 November 1954 || 28 May 1963
|-
| Sir John Thomson || 28 May 1963 || 2 January 1980
|-
| Sir Ashley Ponsonby, 2nd Baronet || |2 January 1980 || 20 March 1996
|-
| Sir Hugo Brunner ||20 March 1996 || 31 August 2008
|-
| Sir Tim Stevenson || 31 August 2008 || 30 September 2021
|-
| Marjorie Glasgow || 1 October 2021 ||
|}
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Deputy lieutenants
A deputy lieutenant of Oxfordshire is commissioned by the Lord Lieutenant of Oxfordshire. Deputy lieutenants support the work of the lord-lieutenant. There can be several deputy lieutenants at any time, depending on the population of the county. Their appointment does not terminate with the changing of the lord-lieutenant, but they usually retire at age 75.
19th century
- 28 February 1831: Francis George Spencer
- 28 February 1831: Charles Peers
- 8 March 1831: Sir Henry John Lambert
- 4 August 1852: Thomas Stonor, 3rd Baron Camoys