The Lieutenant Governor of Newfoundland and Labrador /lɛfˈtɛnənt/ is the viceregal representative in Newfoundland and Labrador of the Canadian monarch, King Charles III, who operates distinctly within the province but is also shared equally with the ten other jurisdictions of Canada, as well as the other Commonwealth realms and any subdivisions thereof, and resides predominantly in her oldest realm, the United Kingdom. The Lieutenant Governor of Newfoundland and Labrador is appointed in the same manner as the other provincial viceroys in Canada and is similarly tasked with carrying out most of the monarch's constitutional and ceremonial duties.

Proprietary Governors of Newfoundland, 1610 to 1728

Governors under King James I (1610 to 1625)

Colony of Cuper's Cove

• John Guy (1610 to 1614)
• John Mason (1615 to 1621)

Colony of Bristol's Hope

• Robert Hayman (1618 to 1628)

Colony of Renews

• Sir Richard Whitbourne (1618 to 1620)

Colony of South Falkland

• Sir Francis Tanfield (1623 to 1926)

Colony of Ferryland

• Edward Wynne (1621 to 1625)

Governors under King Charles I (1625 to 1649)

Colony of Avalon

• Sir Arthur Aston (1625 to 1627)
• George Calvert, The Lord Baltimore (1627 to 1629)
• Cecil Calvert, The Lord Baltimore (1629 to 1632)
• William Hill (1634 to 1638)

Colony of Newfoundland

• Sir David Kirke (1638 to →)

Governors under Lord Protector Oliver Cromwell (1649 to 1658)

• cont.... (← to 1651)
• John Treworgie (1653 to →)

Governors under Lord Protector Richard Cromwell (1658 to 1660)

• cont.... (← to →)

Governors under Charles II (1660)

• cont.... (← to 1660)

Governors of Plaisance (1655 to 1713)

Governors under King Louis XIV of France (1655 to 1713)

• Sieur de Kéréon (1655 to 1660)
• Nicolas Gargot de la Rochette (1660 to 1662)
• Thalour Du Perron (1662 to 1664)
• Lafontaine Bellot (1664 to 1667)
• Sieur de la Palme (1667 to 1670)
• Sieur de la Poippe (1670 to 1684)
• Antoine Parat (1685 to 1690)
• Louis de Pastour de Costebelle (1690 to 1691)
• Jacques-François de Monbeton de Brouillan (1690 to 1701)
• Joseph de Monic (Acting) (1697 to 1702)
• Daniel d'Auger de Subercase (1702 to 1706)
• Philippe Pastour de Costebelle (1706 to 1713)

Commodore-Governors of Newfoundland, 1729 to 1825

Commodore-Governors under King George II (1729 to 1760)

• Henry Osborn (1729 to 1730)
• George Clinton (1731 to 1731)
• Edward Falkingham (1732 to 1732)
• The Viscount Muskerry (1733 to 1734)
• FitzRoy Henry Lee (1735 to 1737)
• Philip Vanbrugh (1738 to 1738)
• Henry Medley (1739 to 1740)
• Thomas Smith (1st tern) (1741 to 1741)
• John Byng (1742 to 1742)
• Thomas Smith (2nd term) (1743 to 1743)
• Sir Charles Hardy (1744 to 1744)
• Richard Edwards (1745 to 1745)
• Sir James Douglas (1746 to 1746)
• John Bradstreet (1747 to 1747)
• Charles Watson (1748 to 1748)
• George Brydges Rodney (1749 to 1749)
• Francis William Drake (1750 to 1752)
• Hugh Bonfoy (1753 to 1754)
• Richard Dorrill (1755 to 1756)
• Richard Edwards (1757 to 1759)
• James Webb (1760 to →)

Commodore-Governors under King George III (1760 to 1820)

• cont.... (← to 1760)
• Thomas Graves (1761 to 1763)
• Sir Hugh Palliser (1764 to 1768)
• John Byron (1769 to 1771)
• Molyneaux Shuldham (1772 to 1774)
• Robert Duff (1775 to 1776)
• John Montagu (1776 to 1778)
• Richard Edwards (1779 to 1781)
• John Campbell (1782 to 1785)
• John Elliot (1786 to 1788)
• Mark Milbanke (1789 to 1791)
• Sir Richard King (1792 to 1793)
• Sir James Wallace (1794 to 1796)
• William Waldegrave (1797 to 1799)
• Sir Charles Morice Pole (1800 to 1801)
• James Gambier (1802 to 1803)
• Sir Erasmus Gower (1804 to 1806)
• John Holloway (1807 to 1809)
• Sir John Duckworth (1810 to 1812)
• Sir Richard Goodwin Keats (1813 to 1816)
• Francis Pickmore (1817 to 1818)
• Sir Charles Hamilton (1818 to →)

Commodore-Governors under King George IV (1820 to 1825)

• cont.... (← to 1825)

Civil Governors of Newfoundland, 1825 to 1855

Civil Governors under King George IV (1825 to 1830)

• Sir Thomas John Cochrane (1825 to →)

Civil Governors under King William IV (1830 to 1837)

• cont.... (← to 1834)
• Sir Henry Prescott (1834 to →)

Civil Governors under Queen Victoria (1837 to 1855)

• cont.... (← to 1841)
• Sir John Harvey (1841 to 1846)
  • Robert Law (colonial administrator) (1846 to 1847)
• Sir John Le Merchant (1847 to 1852)
• Ker Baillie-Hamilton (1852 to 1855)

Colonial Governors of Newfoundland, 1855 to 1907

Colonial Governors under Queen Victoria (1855 to 1901)

• Sir Charles Henry Darling (1855 to 1857)
• Sir Alexander Bannerman (1857 to 1864)
• Sir Anthony Musgrave (1864 to 1869)
• Sir Stephen John Hill (1869 to 1876)
• Sir John Hawley Glover (1876 to 1881)
• Sir Henry Berkeley Fitzhardinge Maxse (1881 to 1883)
• Sir John Hawley Glover (2nd time) (1883 to 1885)
• Sir William Des Vœux (1886 to 1887)
• Sir Henry Arthur Blake (1887 to 1889)
• Sir John Terence Nicholls O'Brien (1889 to 1895)
• Sir Herbert Harley Murray (1895 to 1898)
• Sir Henry Edward McCallum (1898 →)

Colonial Governors under King Edward VII (1901 to 1907)

• cont.... (← to 1901)
• Sir Charles Cavendish Boyle (1901 to 1904)
• Sir William MacGregor (1904 to 1907)

Governors of the Dominion of Newfoundland, 1907 to 1934

Dominion Governors under King Edward VII (1907 to 1910)

• Sir William MacGregor (1907 to 1909)
• Sir Ralph Champneys Williams (1909 to →)

Dominion Governors under King George V (1910 to 1934)

• cont.... (← to 1913)
• Sir Walter Edward Davidson (15 January 1913 to 15 September 1917)
• Sir Charles Alexander Harris (15 September 1917 to 1 September 1922)
• Sir William Lamond Allardyce (1 September 1922 to 1 October 1928)
• Sir John Middleton (1 October 1928 to 20 October 1932)
• Sir David Murray Anderson (20 October 1932 to 15 February 1934)

Commission Governors of Newfoundland, 1934 to 1949

Commission Governors under King George V (1934 to 1936)

• Sir David Murray Anderson (16 February 1934 to 12 January 1936)
• Sir Humphrey T. Walwyn (13 January 1936 to →)

Commission Governor under King Edward VIII (1936)

• cont.... (← to →)

Commission Governors under King George VI (1936 to 1949)

• cont.... (← to 1946)
• Gordon Macdonald (1946 to 30 March 1949)

Lieutenant Governors of Newfoundland, 1949 to 1999

Lieutenant Governors under King George VI (1949 to 1952)

• Sir Albert Walsh (1 April 1949 to 15 September 1949)
• Sir Leonard Cecil Outerbridge (15 September 1949 to →)

Lieutenant Governors under Queen Elizabeth II (1952 to 1999)

• cont.... (← to 16 December 1957)
• Campbell Leonard Macpherson (16 December 1957 to 1 March 1963)
• Fabian Aloysius O'Dea (1 March 1963 to 2 April 1969)
• Ewart John Arlington Harnum (2 April 1969 to 2 July 1974)
• Gordon Arnaud Winter (2 July 1974 to 10 July 1981)
• William Anthony "Tony" Paddon (10 July 1981 to 5 September 1986)
• James Aloysius McGrath (5 September 1986 to 5 November 1991)
• Frederick William Russell (5 November 1991 to 5 February 1997)
• Dr. Arthur Maxwell House (5 February 1997 to 1999)

Lieutenant Governors of Newfoundland and Labrador, 1999 to present

Lieutenant Governors under Queen Elizabeth II (1999 to 2022)

• Dr. Arthur Maxwell House (1999 to 1 November 2002)
• Edward Moxon Roberts (1 November 2002 to 4 February 2008)
• John Carnell Crosbie (4 February 2008 to 19 March 2013)
• Frank F. Fagan (19 March 2013 to 3 May 2018)
• Judy Foote (3 May 2018 to →)

Lieutenant Governors under King Charles III (2022 to present)

• cont.... (← to 14 November 2023)
• Joan Marie Aylward (14 November 2023 to present)