- Abbott, Ernest Frederick
- Abbs, Henry Cooper
- Abdy, John Thomas
- A'Beckett, Arthur William
- A'Beckett, Edward FitzHayley
- A'Beckett, Thomas
- Aberdare, Baron (Henry Austin Bruce)
- Abraham, Augustus Brown
- Abraham, Philip Boyle
- Abrahams, Frederick Michael
- Abram, William John
- Ackers, Benjamin St. John
- Ackroyd, Edward James
- Acland, Charles Thomas Dyke
- Acland, John Barton Arundel
- Acland, Reginald Brodie
- Acton, Edward Birt
- Acworth, Andrew Oswald
- Acworth, Harry Arbuthnot
- Acworth, Nathaniel Brindley
- Adair, Hugh Edward
- Adams, Borlase Hill
- Adams, Francis Ottiwell
- Adams, Frank Mantell
- Adams, Henry Brettingham
- Adams, Maxwell Richard Peers
- Adams, Oliver
- Adams, Percy Bolland
- Adams, Robert Hopkins
- Adams, Robert Patten
- Adderley, Henry Arden
- Addison, John Edmund Wentworth
- Adkins, Henry
- Adrian, Alfred Douglas
- Ady, Francis Eustace
- Agabeg, Aviet
- Agar, William Talbot
- Agnew, Andrew Noel
- Agnew, William Thomas Fischer
- Agostini, Louis Edgar
- Agostini, Simon
- Aherne, David Francis
- Ahsanuddin Ahmad
- Aikin, Edward
- Ainslie, Ainslie Douglas
- Ainslie, Ernest Henry
- Ainslie, Montague Mordaunt
- Ainslie, Oliver Alexander
- Ainsworth, David (b.1823)
- Ainsworth, David (b.1842)
- Aird, David Alfred
- Airey, Julius Talbot
- Aitken, Alexander Muirhead
- Aitken, Louis John
- Akilandaiya
- Alberga, Jerome
- Alcazar, Henry Albert
- Aldam, William
- Alderson, Charles Henry
- Aldous, James Edward
- Aldridge, John
- Alexander, Brandon Michael
- Alexander, Charles Robert
- Alexander, David Lindo
- Alexander, George Caledon
- Alexander, Henry Abbott Robert
- Alexander, James Brace
- Alexander, Joseph Gundry
- Alexander, William Henry
- Alexander, William Robert
- Ali
- Alison, Arthur
- Alison, Charles
- Alison, Henry
- Allan, James Gordon
- Allanson, James Audus
- Allcard, William Henry
- Allen, Archibald John
- Allen, Charles Francis Egerton
- Allen, Henry George
- Allen, Jefferys Charles
- Allen, John Higgins
- Allen, Sidney Simpson
- Allen, Thomas
- Allen, Wilfred Baugh
- Allen, William Bird
- Allen, William Halfhide
- Alleyne, Forster McGeachy
- Allison, William
- Alpe, Edmund Nicholas
- Alston, Charles Ross
- Alston, George Augustus
- Alston, Gilbert Rowland
- Alston, Hugh
- Alston, Vere Speke
- Ambrose, William
- Amedroz, Henry Frederick
- Ameer, Ali (Hon. Syed)
- Amherst, Hon. Josceline George Herbert
- Amherst, Rev. William Joseph
- Amiruddin, (Sheikh)
- Amory, George Henry
- Amos, Sheldon
- Amphlett, Edward Greenhill
- Amphlett, John
- Amphlett, Richard Holmden
- Amyot, William Henry
- Anderson, Andrew
- Anderson, Charles Henry
- Anderson, George
- Anderson, James (b.?)
- Anderson, James (b.1839)
- Anderson, John Coussmaker
- Anderson, John Thomas
- Anderson, Robert (b.?)
- Anderson, Robert (b.1841)
- Anderson, Thomas Kerr
- Anderson, (Hon.) William John
- Anderson, Yarborough
- Anderton, Francis Robert
- André, Auguste
- Andrew, Alfred Andrew
- Andrew, Henry Whitworth
- Andrew, Richard Hambley
- Andrew, William Raeburn St. Clair
- Andrews, Charles Alfred
- Andrews, John Luckham Williams
- Andrews, John Richard
- Andrews, Robert
- Andrews, Robert William
- Angell, William
- Angus, William Gurney
- Anson, Sir William Reynell, Bart.
- Anstie, James
- Anthony, Edwyn
- Antonyson, William Ebenezer
- Antrobus, Cosmo Gordon
- Antrobus, John Coutts
- Apcar, Arratoon Thomas
- Apcar, John Alexander
- Apcar, John Gregory
- Apcar, Thomas Alexander
- Appach, Francis Hobson
- Appleton, William
- Aranha, Louis Jessamy de Souza-leal
- Arathoon, Arathoon
- Arathoon, Catchick Wise
- Arathoon, Johannes Herapiet Wise
- Arbuthnot, Robert George
- Archdall, Edmund Moulton
- Archer, Fulbert
- Archer, Henry Goodwyn
- Archer, Valentine Dennis
- Archer, William
- Archibald, William Frederick Alphonse
- Arden, Douglas
- Arden, Percy
- Arden, Richard Edward
- Argles, Thomas Atkinson
- Arkcoll, Cecil Scott
- Arkle, Richard Naylor
- Arkwright, Richard
- Armitage, Vernon Kirk
- Armitstead, Francis Edward
- Armstrong, Francis Charles
- Armstrong, Frederick Jennings
- Wright-Armstrong, Henry Bruce
- Armstrong, John
- Armytage, Francis Reginald
- Arnaud, Henry Bruce
- Arnold, Alfred
- Arnold, Charles Comber
- Arnould, Sir Joseph
- Arthur, John
- Aranachalam, Ponnambalam
- Ashburnham, Hon. William
- Ashley, Hon. Anthony Evelyn Melbourne
- Ashmore, Charles James
- Ashton, Arthur Jacob
- Ashton, Henry Leopold
- Ashton, Jonas
- Ashworth, Philip Arthur
- Aspinall, Butler Cole
- Aspinall, James Perronet
- Aspinall, John Bridge
- Aspland, Lindsey Middleton
- Asquith, Herbert Henry
- Astbury, John Meir
- Aston, Henry Faure
- Aston, Joseph Keech
- Aston, Theodore
- Athawes, Edward James
- Atkin, Peter Wilson
- Atkins, George
- Atkins, Thomas de Courcy
- Atkinson, Charles Milner
- Atkinson, Edward Tindal
- Atkinson, George
- Atkinson, Henry Tindal (1)
- Atkinson, Henry Tindal (2)
- Atkinson, John Jepson
- Atkinson, Nicholas
- Attenborough, Walter Annis
- Attwater, Thomas Henry
- Attwood, Edward Marcus
- Atty, George
- Aubin, Jean Pierre Georges
- Auldjo, Henry Francis
- Austin, Alfred
- Austin, Anthony
- Austin, Charles Alleyne Summers
- Austin, Edward Cecil Winchcombe
- Austin, Henry Evans
- Austin, James Valentine
- Austin, Robert Cecil
- Austin, William
- Avice, Frederick Henry
- Avory, Horace Edmund
- Awdry, Charles
- Ayers, Frank Richman
- Ayers, Frederic
- Ayliff, Edwin Horace Samuel
- Ayrton, Acton Smee
- Ayrton, William Scrope
