| William Atkinson | William Atkinson & Sons | William Atkinson Jones |
| William Attaway | William Attewell | William Attia |
| William Attrill | William Aubrey | William Aucoin |
| William August Brevoort Coolidge | William August Fisher | William August Kobbé |
| William August Marburg | William August Rodenberg | William August Shade |
| William Augustao Mgimwa | William Auguste Foley | William Augustine Hickey |
| William Augustine Williams | William Augustus | William Augustus Ayres |
| William Augustus Blount Branch | William Augustus Croffut | William Augustus Darling |
| William Augustus Hall | William Augustus Lake | William Augustus Larned |
| William Augustus Newell | William Augustus Pullen | William Augustus Reeder |
| William Augustus Tilden | William Augustus Wellman | William Augustus West, 3. Earl De La Warr |
| William Augustus, Duke of Cumberland | William Auld | William Austin |
| William Austin (Filmeditor) | William Austin (Mediziner) | William Austin (Schauspieler) |
| William Austin (Schriftsteller) | William Austin House | William Avenya |
| William Averell Harriman | William Averill Stowell | William Avery |
| William Avery (Basketballspieler) | William Aviolat | William Avner Paschal |
| William Awihilima Kahaiali'i | William Awihilima Kahaialiʻi | William Axl Rose |
| William Axt | William Ayers | William Ayerst Ingram |
| William Ayres | William Ayrton | William Ayrton (Dirigent) |
| William Ayscough | William Aytoun | William Azariah Munn |
| William „Bill“ McGuire Bryson | William „Count“ Basie | William „Pop“ Gates |
| William Ætheling | William à Court | William à Court, 1. Baron Heytesbury |
| William à Court, 1. Baronet | William B. Allison | William B. Anderson |
| William B. Atwood | William B. Bankhead | William B. Bankhead National Forest |
| William B. Bate | William B. Benton | William B. Bowling |
| William B. Brierley | William B. Buffum | William B. Caldwell |
| William B. Caldwell III | William B. Caldwell IV | William B. Calhoun |
| William B. Campbell | William B. Charles | William B. Clark |
| William B. Coley | William B. Coley Award | William B. Coley Award for Distinguished Research in Basic and Tumor Immunology |
| William B. Cooper | William B. Craig | William B. Cravens |
| William B. Davidson | William B. Davis | William B. Davis (Zoologe) |
| William B. Dinsmoor | William B. Eerdmans Publishing Company | William B. Francis |
| William B. Franke | William B. Franklin | William B. Friend |
| William B. Graham Prize for Health Services Research | William B. Greenough | William B. Greenough III |
| William B. Guggenheim | William B. Harris | William B. Hartwell |
| William B. Hawks | William B. Heilig Field | William B. Helmreich |
| William B. Horton | William B. Houchens | William B. Ide |
| William B. Jensen | William B. Johnson | William B. Johnson (Mathematiker) |
| William B. Jordan | William B. Kannel | William B. Kaplan |
| William B. Kean | William B. Kouwenhoven | William B. Lenoir |
| William B. Lewis | William B. Maclay | William B. Macomber |
| William B. Macomber junior | William B. Magruder | William B. McInnes |
| William B. McKinley | William B. Mitchell | William B. Morris |
| William B. Muchmore | William B. Munro | William B. Murphy |
| William B. N. Berry | William B. Pine | William B. Preston |
| William B. Pryer | William B. Read | William B. Richardson |
| William B. Rochester | William B. Ross | William B. Rosson |
| William B. Saxbe | William B. Scott | William B. Shattuc |
| William B. Shockley | William B. Small | William B. Smith |
| William B. Spencer | William B. Spong | William B. Strong |
| William B. Taylor junior | William B. Travis | William B. Umstead |
| William B. Washburn | William B. Widnall | William B. Williams |
| William B. Wilson | William Babcock | William Babcock Hazen |
| William Babington | William Bach | William Bach, Baron Bach |
| William Backhouse | William Backhouse Astor | William Backhouse Astor junior |
| William Backhouse Astor senior | William Backhouse Astor, Jr. | William Backhouse Astor, Sr |
| William Bacon | William Bacon Oliver | William Bacon Wright |
| William Bade | William Badger | William Baer |
| William Baffin | William Baikie | William Bailey |
| William Bailey Lamar | William Bainbridge | William Baird |
| William Baird (Zoologe) | William Baker | William Baker (Politiker) |
| William Bakewell | William Balck | William Baldé |
| William Balde | William Baldwin | William Balfour Baikie |
| William Balikwisha | William Ball | William Ball (Astronom) |
| William Ball (Fußballspieler) | William Ball (Politiker) | William Ballard Preston |
| William Bambridge | William Banting | William Barak |
| William Barber Tyler | William Barbour | William Barbour Agnew |
| William Barclay | William Barclay (Theologe) | William Barclay Charles |
| William Barclay Masterson | William Barclay McMurrich | William Barclay Peat |
| William Bardeen | William Bardolf | William Barents |
| William Baring | William Baring (Maler) | William Baring (Mediziner) |
| William Baring, 2. Baron Ashburton | William Barker | William Barksdale |
| William Barlas | William Barlow | William Barlow (Bischof von Chichester) |
| William Barlow (Geologe) | William Barnard | William Barnes |
| William Barnes (Dichter) | William Barnes (Richter) | William Barnes (Sportschütze) |
| William Barnes Steveni | William Barnetson, Baron Barnetson | William Barnett |
| William Barr | William Barret Travis | William Barrett |
| William Barron Hilton | William Barry | William Barry (Ruderer) |
| William Barry Grove | William Barry Owen | William Barry Wood |
| William Barstow Strong | William Barstow von Guenther | William Bart Saxbe |
| William Bartholomew | William Bartlett | William Bartlett (Leichtathlet) |
| William Bartlett Peed | William Barton | William Barton (Schriftsteller) |
| William Barton Rogers | William Barton Wade Dent | William Bartram |
| William Basie | William Basinski | William Bass |
| William Bassett | William Batchelder Bradbury | William Bate Hardy |
| William Bates | William Bates (Mediziner) | William Bateson |
| William Batista | William Battie | William Battle |
| William Bauchop Wilson | William Baumol | William Baxter |
| William Bay National Park | William Bayer | William Baylies |
| William Baylis | William Bayliss | William Bayly |
| William Bazeley | William Baziotes | William Böniz |
| William Böving | William Bøving | William Bøving Vick |
| William Büller | William Bürger | William Beach Lawrence |
| William Beard | William Beard (Maler) | William Beard (Unternehmer) |
| William Beardmore | William Beardmore and Company | William Beardmore, 1. Baron Invernairn |
| William Beardsley | William Beattie Feathers | William Beatty |
| William Beatty (Politiker) | William Beatty Rochester | William Beau Mirchoff |
| William Beauchamp | William Beauchamp, 1. Baron Bergavenny | William Beaudine |
| William Beaumont | William Beaumont (Begriffsklärung) | William Beaumont, 2. Viscount Beaumont |
| William Beaumont, 7. Baron Beaumont, 2. Viscount Beaumont | William Bebb | William Becher |
