This is List of First Sea Lords of Great Britain and the United Kingdom. The First Sea Lord is the senior admiral and professional head of the Royal Navy.

Between 1795 and 1827 the head of the Royal Navy was known as the Admiral of the Fleet. This office later became a rank.

• Richard Howe, 1st Earl Howe 1795-1799
• Sir Peter Parker 1799-1811
• Prince William, Duke of Clarence 1811-1827

First Sea Lords, 1828-Present

• Sir George Cockburn 1828-1830
• Sir Thomas Hardy 1830-1834
• The Hon. George Heneage Dundas 1834
• Sir Charles Adam 1834
• Sir George Cockburn 1834-1835
• Sir Charles Adams 1835-1841
• Sir George Cockburn 1841-1846
• Sir William Parker 1846
• Sir Charles Adams 1846-1847
• Sir James Dundas 1847-1852
• The Hon. Maurice Fitzhardinge Berkeley 1852
• Hyde Parker 1852-1854
• The Hon. Maurice Fitzhardinge Berkeley 1854-1857
• Sir Richard Dundas 1857-1858
• William Martin 1858-1859
• Sir Richard Dundas 1859-1861
• Sir Frederick Grey 1861-1866
• Sir Alexander Milne 1866-1868
• Sir Sydney Dacres 1868-1872
• Sir Alexander Milne 1872-1876
• Sir Hastings Yelverston 1876-1877
• Sir George Wellesley 1877-1879
• Sir Astley Cooper Key 1879-1885
• Sir Arthur Hood 1885-1886
• Lord John Hay 1886
• Sir Arthur Hood 1886-1889
• Sir Vesey Hamilton 1889-1891
• Sir Anthony Hoskins 1891-1893
• Sir Frederick Richards 1893-1899
• Lord Walter Kerr 1899-1904
• Sir John Fisher 1904-1910
• Sir Arthur Wilson 1910-1911
• Sir Francis Bridgeman 1911-1912
• Prince Louis of Battenberg 1912-1914
• John Fisher, 1st Baron Fisher 1914-1915
• Sir Henry Jackson 1915-1916
• Sir John Jellicoe 1916-1917
• Sir Rosslyn Wemyss 1917-1919
• David Beatty, 1st Earl Beatty 1919-1927
• Sir Charles Madden 1927-1930
• Sir Frederick Field 1930-1933
• Ernle Chatfield, 1st Baron Chatfield 1933-1938
• Sir Roger Backhouse 1938-1939
• Sir Dudley Pound 1939-1943
• Andrew Cunningham, 1st Baron Cunningham of Hyndhope 1943-1946
• Sir John Cunningham 1946-1948
• Sir Bruce Fraser 1948-1951
• Sir Rhoderick McGrigor 1951-1955
• Louis Mountbatten, 1st Earl Mountbatten of Burma 1955-1959
• Sir Charles Lambe 1959-1960
• Sir Caspar John 1960-1963
• Sir David Luce 1963-1966
• Sir Varyl Begg 1966-1968
• Sir Michael Lefanu 1968-1970
• Sir Peter Hill-Norton 1970-1971
• Sir Michael Pollock 1971-1974
• Sir Edward Ashmore 1974-1977
• Sir Terence Lewin 1977-1979
• Sir Henry Leach 1979-1982
• Sir John Fieldhouse 1982-1985
• Sir William Staveley 1985-1989
• Sir Julian Oswald 1989-1993
• Sir Benjamin Bathurst 1993-1995
• Sir Jock Slater 1995-1998
• Sir Michael Boyce 1998-2001
• Sir Nigel Essenhigh 2001-2002
• Sir Alan West 2002-present