| William Calder | William Caldwell | William Caleb Yarborough |
| William Calhoun | William Calhoun Newland | William Calley |
| William Callow | William Calvin Oates | William Cambridge |
| William Camden | William Camenzuli | William Cameron |
| William Cameron Forbes | William Cameron McCool | William Cameron Menzies |
| William Cameron Sproul | William Cameron Townsend | William Camp |
| William Camp (Informatiker) | William Campbell | William Campbell (Politiker) |
| William Campbell (Schauspieler) | William Campbell (Vizegouverneur) | William Campbell House |
| William Campbell of Breadalbane | William Campbell Preston | William Campbell Preston Breckinridge |
| William Campion | William Candidus | William Cane Carl |
| William Cannon | William Cannon (Politiker) | William Cantelo |
| William Cantilupe | William Cantilupe, 1. Baron Cantilupe | William Cantrell Dismukes |
| William Carew | William Carew, 5. Baronet | William Carey |
| William Carey (Höfling) | William Carey Jones | William Cargill |
| William Carl | William Carl Buchan | William Carleton |
| William Carlile Arnold | William Carlisle | William Carlos Williams |
| William Carlucci | William Carmichael | William Carmichael McIntosh |
| William Carney | William Carpenter | William Carpenter (Maler) |
| William Carr | William Carr (Historiker) | William Carr (Ruderer) |
| William Carr Beresford | William Carr Lane | William Carrier |
| William Carroll | William Carroll (Politiker, 1788) | William Carron, Baron Carron |
| William Carruthers | William Carson (Schiff) | William Carter |
| William Carter (Märtyrer) | William Carter Burdett | William Carter Burdett Jr. |
| William Carter Love | William Carter Phillips | William Cartwright |
| William Cartwright (Dramatiker) | William Cartwright (Filmeditor) | William Carvalho |
| William Cary | William Cary (Instrumentenbauer) | William Cary Renfrow |
| William Casey | William Casey Marland | William Caslon |
| William Caspar Graustein | William Casselman | William Cassidy |
| William Castle | William Castle (Regisseur) | William Castro |
| William Castrogiovanni | William Catesby | William Cathay |
| William Cathcart, 1. Earl Cathcart | William Cato Cramer | William Cattell Trimble |
| William Catterall | William Cattley | William Cavendish |
| William Cavendish, 1. Duke of Devonshire | William Cavendish, 1. Duke of Newcastle | William Cavendish, 1. Duke of Newcastle-upon-Tyne |
| William Cavendish, 1. Herzog von Newcastle | William Cavendish, 2. Duke of Devonshire | William Cavendish, 3. Duke of Devonshire |
| William Cavendish, 4. Duke of Devonshire | William Cavendish, 4. Herzog von Devonshire | William Cavendish, 5. Duke of Devonshire |
| William Cavendish, 6. Duke of Devonshire | William Cavendish, 7. Baron Clifford | William Cavendish, Marquess of Hartington |
| William Cavendish-Bentinck | William Cavendish-Bentinck (Begriffsklärung) | William Cavendish-Bentinck, 3. Duke of Portland |
| William Cavendish-Bentinck, 7. Duke of Portland | William Cavendish-Scott-Bentinck | William Cavendish-Scott-Bentinck, 5. Duke of Portland |
| William Cawthorne Unwin | William Caxton | William Cayton |
| William Cecil | William Cecil (Militär, 1854) | William Cecil (Militär, 1886) |
| William Cecil Burghley | William Cecil Campbell | William Cecil Marshall |
| William Cecil Slingsby | William Cecil, 1. Baron Burghley | William Cecil, 16. Baron de Ros |
| William Cecil, 16. Baron Ros | William Cecil, 2. Earl of Exeter | William Cecil, 2. Earl of Salisbury |
| William Cecil, 2nd Earl of Exeter | William Cecil, 3. Baron Amherst of Hackney | William Cecil, 3. Marquess of Exeter |
| William Cecil, 5. Marquess of Exeter | William Cecil, 7. Marquess of Exeter | William Cepeda |
| William Chalfant | William Chalmers | William Chalmers (Fußballspieler, 1907) |
| William Chalmers (Kaufmann) | William Chalmers Burns | William Chaloner |
| William Chamberlain | William Chamberlain (Politiker) | William Chamberlain (Ritter) |
| William Chambers | William Chambers (Architekt) | William Chambliss |
| William Champ | William Chandler Roberts-Austen | William Chang Suk Ping |
| William Chanler | William Channing | William Chapman |
| William Chapman Hewitson | William Chapman Ralston | William Chapman Revercomb |
| William Charles | William Charles Aalsmeer | William Charles Achi |
| William Charles Anderson | William Charles Ayers | William Charles Chamberlain |
| William Charles Cole Claiborne | William Charles Cotton | William Charles Dement |
| William Charles Fleming Robertson | William Charles Gribble | William Charles Gribble Jr. |
| William Charles Hittinger II | William Charles Kaysing | William Charles Linnaeus Martin |
| William Charles Littlejohn | William Charles Lunalilo | William Charles Macready |
| William Charles Merrick | William Charles Redfield | William Charles Rogers |
| William Charles Salmon | William Charles Skurla | William Charles Wentworth |
| William Charles White | William Chase Greene | William Chase Walcott |
| William Chatterton Dix | William Chaumet | William Chauvenet |
| William Chen | William Cheruiyot Sigei | William Cheselden |
| William Cheseret | William Chester Lankford | William Cheswick |
| William Chetwood | William Chiaiese | William Child |
| William Child-Villiers, 10. Earl of Jersey | William Childs Westmoreland | William Chilton |
| William Ching | William Chinyama | William Chittick |
| William Chomsky | William Christian | William Christian Bouck |
| William Christian Heinrich Martensen | William Christian Krumbein | William Christie |
| William Christie (Astronom) | William Christie Gosse | William Christoffer Handy |
| William Christoph Zeise | William Christopher | William Christopher Atkinson |
| William Christopher Handy | William Christopher Stadie | William Christopher Zeise |
| William Chrystie Miller | William Church | William Church (Erfinder) |
| William Churchill de Mille | William Churchill deMille | William Claflin |
| William Claiborne | William Claiborne Dunlap | William Clarence Alves |
| William Clarence Eckstein | William Clarence Stokoe | William Clark |
| William Clark (Begriffsklärung) | William Clark (Bogenschütze) | William Clark (Politiker, 1774) |
| William Clark Brinkley | William Clark Cowie | William Clark Falkner |
| William Clark Gable | William Clark House | William Clark junior |
| William Clark Quantrill | William Clark Styron | William Clark, Baron Clark of Kempston |
| William Clarke | William Clarke (Musiker) | William Clarke (Politiker) |
| William Clarke (Radsportler) | William Clarke Cowie | William Clarke Quantrill |
| William Claude Dukenfield | William Claude Fields | William Claude McMahon |
| William Claude Rains | William Claxton | William Claxton (Regisseur) |
| William Clay Cole | William Clay Ford | William Clay Ford Junior |
| William Clay Ford senior | William Clay Ford Senior | William Clayton |
| William Clayton Anderson | William Cleary | William Cleaver Francis Robinson |
| William Cleite Boaventura | William Clem | William Clemens |
| William Cliff | William Clifford | William Clifford Munro Scott |
| William Clifford Munroe Scott | William Clifford Newman | William Clift |
| William Clifton Morris | William Clingan | William Clinton |
| William Clinton Olson | William Clive Bridgeman, 1. Viscount Bridgeman | William Clothier |
| William Clyburn Jr. | William Clyde Elliott | William Clyde Elliott II |
| William Clyde Hitchcock | William Coales | William Cobb |
| William Cobbett | William Coblentz | William Cochran |
| William Cochran (Sänger) | William Cochran (Schlagzeuger) | William Cochrane |
| William Cochrane, 1. Earl of Dundonald | William Cockayne | William Cockburn |
| William Cocke | William Cockerill | William Cockerill, Junior |
| William Cockerill, Senior | William Coddington | William Cody |
| William Cogswell | William Cohen | William Cohn |
