| William Alexander Forbes | William Alexander Gerhardie | William Alexander Graham |
| William Alexander Greer | William Alexander Louis Stephen Douglas Hamilton | William Alexander McKinlay |
| William Alexander Smith | William Alexander Trapp | William Alexander, I conte di Stirling |
| William Alfred Fowler | William Alfred Goldsworthy | William Alfred Rae Wood |
| William Ali Floyd | William Alison Anders | William Allan |
| William Alland | William Allen | William Allen (cardinale) |
| William Allen (politico) | William Allen Basie | William Allen Butler |
| William Allen Edwards | William Allen Egan | William Allen Horning |
| William Allen Thornbury | William Allen White | William Allen White Cabins |
| William Alleyne Cecil | William Allingham | William Allman |
| William Almon Wheeler | William Alonso | William Aloysius Brady |
| William Aloysius O'Connor | William Alphonso Murrill | William Alston |
| William Alves | William Alves (calciatore 1986) | William Alves (calciatore 1987) |
| William Alves (calciatore 1991) | William Alves de Oliveira | William Alvin Moody |
| William Alvord | William Alwyn | William Amar Keys |
| William Amaral de Andrade | William Ambroise Marçais | William Ambrose Wright |
| William Amelius Aubrey de Vere Beauclerk | William Ames | William Amherst |
| William Amherst, I conte Amherst | William Amine Hawi | William Amor |
| William Amorim | William Amponsah | William and Mary College |
| William Andelfinger | William Anders | William Anderson |
| William Anderson (ciclista) | William Anderson (hockeista su ghiaccio) | William Andre |
| William Andrew Pataky | William Andrewes | William Anin |
| William Anne Holles Capell | William Ansah Sessarakoo | William Anson |
| William Anthony Blalock | William Anthony Foulkes | William Anthony McGuire |
| William Anthony Morley | William Anthony Parker | William Anthony Perry |
| William Anthony Shinkman | William Anthony Toomey | William Antonio Maldonado López |
| William Antonio Maldonado Lopez | William ap Thomas | William Applegarth |
| William Aquin Carew | William Arboleda | William Archer |
| William Archer (naturalista) | William Archer Fullingim | William Archibald |
| William Archibald Cadell | William Archibald Spooner | William Arjona |
| William Arne Hanssen | William Arrol | William Artaud |
| William Arthur Bonds | William Arthur Carr | William Arthur Cummings |
| William Arthur Davis | William Arthur Johnson | William Arthur Klucas |
| William Arthur Miske | William Arthur Moloney | William Arthur Pailes |
| William Arthur Paxton | William Arthur Philip Louis | William Arthur Stanier |
| William Arthur Stickney | William Arthur Ward | William Artino |
| William Artur de Oliveira | William Ascroft | William Ashcroft |
| William Asher | William Asher (regista) | William Asher (sciatore nautico) |
| William Ashley Bradfield | William Ashley Kirby | William Ashman Fraker |
| William Ashurst | William Assandri | William Astbury |
| William Astor | William Astor, I visconte Astor | William Atheling Jr |
| William Atherton | William Atticus Shaffer | William Attrill |
| William Aubrey Beauclerk | William Aucamp | William Auguste Brevoort Coolidge |
| William Auguste Coolidge | William Augustine Whelan | William Augustus Banks III |
| William Augustus Barstow | William Augustus Tilden | William Auld |
| William Austin | William Austin (scrittore) | William Averell Harriman |
| William Avery | William Avery Rockefeller | William Axt |
| William Ayache | William Ayres Ward | William à Court, I barone Heytesbury |
| William B. Bulloch | William B. Davidson | William B. Davis |
| William B. Eerdmans | William B. Eerdmans Publishing Company | William B. Franke |
| William B. Hazen | William B. Helmreich | William B. Lenoir |
| William B. Mason | William B. Rosson | William B. Saxbe |
| William B. Strong | William B. Travis | William Babcock Hazen |
| William Babell | William Backhouse Astor | William Backhouse Astor, Jr. |
| William Backhouse Astor, Sr. | William Baeten | William Baffin |
| William Bagot | William Bagot, I barone Bagot | William Bagot, II barone Bagot |
| William Bagot, III barone Bagot | William Bagwell | William Bailey |
| William Baines | William Baird | William Baird (calciatore 1874) |
| William Baker | William Bakewell | William Bakewell (attore) |
| William Bakewell (marinaio) | William Baldry Tammas | William Baldwin |
| William Balikwisha | William Baliol Brett | William Ball |
| William Ball (astronomo) | William Ballard Hurd | William Ballard Preston |
| William Ballinger | William Balmer | William Barber |
| William Barbey | William Barbio | William Barclay |
| William Barclay (teologo) | William Barclay Masterson | William Barents |
| William Baring | William Baring, II barone Ashburton | William Barker |
| William Barker (traduttore) | William Barlow | William Barlow (mineralogista) |
| William Barlum Thompson | William Barner Lienhard | William Barr |
| William Barret Travis | William Barron Hilton | William Barry Taylor |
| William Barry Wood | William Barstow Strong | William Bart Saxbe |
| William Barta | William Bartley III | William Barton Rogers |
| William Bartram | William Basie | William Basil Percy Feilding |
| William Basinski | William Bassett | William Bassett (attore) |
| William Bates | William Bates Francis | William Bateson |
| William Bathurst Dove | William Batista | William Baumol |
| William Bayer | William Bayle Bernard | William Bayliss |
| William Baziotes | William Bøving | William Beardmore |
| William Beardmore and Company | William Beattie Feathers | William Beattie Ramsay |
| William Beau Mirchoff | William Beauclerk | William Beauclerk, IX duca di St. Albans |
| William Beauclerk, VIII duca di St. Albans | William Beauclerk, X duca di St Albans | William Beauclerk, X duca di St. Albans |
| William Beaudine | William Beaumont | William Beccaro |
| William Beckett | William Beckford | William Beckford di Somerley |
| William Becklean | William Beckman | William Beckmann |
| William Bedford | William Bedwell | William Beebe |
| William Beechey | William Bell | William Bell (cantante) |
| William Bell (cestista) | William Bell (fotografo) | William Bell (personaggio) |
| William Bell Dinsmoor | William Bell Scott | William Bellairs |
| William Belsham | William Bemrose | William Ben Hogan |
| William Bendix | William Benedict Nicholson | William Benjamin Lenoir |
| William Bennett | William Bennett (compositore) | William Bennett (musicista) |
| William Bennett (politico canadese) | William Bennett (politico statunitense 1943) | William Bennett (politico statunitense) |
| William Bennett (politico) | William Benson | William Benson Thomas |
| William Bent | William Bentinck | William Bentinck, 1° Conte di Portland |
| William Bentinck, 1º Conte di Portland | William Bentinck, I conte di Portland | William Bentinck, II duca di Portland |
| William Bentinck, IV duca di Portland | William Beresford | William Beresford (ufficiale) |
| William Beresford, I visconte Beresford | William Berger | William Berke |
| William Bernard Seiling | William Bernard Thieben | William Bernard Ullathorne |
| William Bernbach | William Berry | William Bertka |
| William Bertram | William Bertrum | William Berwald |
| William Besse | William Best Evans | William Betty |
