List of United Kingdom MPs: A

Following is an incomplete list of past and present Members of Parliament (MPs) of the United Kingdom whose surnames begin with A. The dates in parentheses are the periods for which they were MPs. Linked years lead to articles about the election of that year.

• Diane Abbott (1987–present)
• Richard Acland (1935–1945, 1947–1955)
• Gerry Adams (1983–1992, 1997–2011)
• Irene Adams (1990–2005)
• Vyvyan Adams (1931–1945)
• Jennie Adamson (1938–1946)
• William Murdoch Adamson (1922–1931, 1935–1945)
• William Adamson (1910–1931)
• Christopher Addison (1910–1922, 1925–1931, 1934–1935)
• Robert Adley (1970–1993)
• Nick Ainger (1992–2010)
• Peter Ainsworth (1992–2010)
• Bob Ainsworth (1992–present)
• Jonathan Aitken (1974–1997)
• Sir Max Aitken, 2nd Baronet (1945–1950)
• Max Aitken, Lord Beaverbrook (1910–1916)
• William Aitken (1950–1964)
• Aretas Akers-Douglas (1880–1906)
• Irving Albery (1924–1945)
• A. V. Alexander (1922–1931, 1935–1950)
• Danny Alexander (2005–present)
• Douglas Alexander (1997–present)
• Richard Alexander (1979–1997)
• Michael Alison (1964–1997)
• Richard Allan, Baron Allan of Hallam (1997–2005)
• Robert Allan (1951–1966)
• Rupert Allason (1987–1997)
• Graham Allen (1987–present)
• Garry Allighan (1945–1947)
• David Alton, Baron Alton of Liverpool (1979–1997)
• Julian Amery (1950–1966, 1969–1992)
• Leo Amery (1911–1945)
• David Amess (1983–present)
• Michael Ancram (1974, 1979–1987, 1992–2010)
• Alexander Anderson (1945–1954)
• Donald Anderson (1966–1970, 1974–2005)
• Frank Anderson (1935–1959)
• Janet Anderson (1992–2010)
• Norman Angell (1929–1931)
• Charles Arbuthnot (1809–1831)
• Charles George James Arbuthnot (1831–1832)
• Gerald Arbuthnot (1910)
• Hugh Arbuthnott, KCB (1826–1865)
• James Arbuthnot (1987–present)
• Sir John Arbuthnot, 1st Baronet (1950–1964)
• Jeffrey Archer (1970–1992)
• Peter Archer (1966–1992)
• Ernest Armstrong (1964–1987)
• Hilary Armstrong (1987–2010)
• Jacques Arnold (1987–1997)
• Tom Arnold (1974–1997)
• David Ashby (1983–1997)
• Paddy Ashdown (1983–2001)
• Jack Ashley, Baron Ashley of Stoke (1966–1992)
• Joe Ashton (1968–2001)
• Jack Aspinwall (1979–1997)
• John Jacob Astor, 1st Baron Astor of Hever (1922–1945)
• Michael Astor (1945–1951)
• Nancy Astor, Viscountess Astor (1919–1945)
• Waldorf Astor, 2nd Viscount Astor (1910–1919)
• William Astor, 3rd Viscount Astor (1935–1945,1951–1952)
• Arthur Atherley (1806–1807, 1812–1818, 1831–1835)
• Candy Atherton (1997–2005)
• Charlotte Atkins (1997–2010)
• Humphrey Atkins (1955–1987)
• Robert Atkins (1979–1997)
• David Atkinson (1977–2005)
• Peter Atkinson (1992–2010)
• Humphrey Attewell (1945–1950)
• Clement Attlee (1922–1956)
• John Austin (1992–2010)
• Stan Awbery (1945–1964)
• Walter Ayles (1923–1924, 1929–1931, 1945–1953)