| William Cavendish (disambigua) | William Cavendish, I conte di Devonshire | William Cavendish, I duca del Devonshire |
| William Cavendish, I duca di Devonshire | William Cavendish, I duca di Newcastle | William Cavendish, I duca di Newcastle-upon-Tyne |
| William Cavendish, II barone Chesham | William Cavendish, II conte di Devonshire | William Cavendish, II duca del Devonshire |
| William Cavendish, II duca di Devonshire | William Cavendish, III conte del Devonshire | William Cavendish, III conte di Devonshire |
| William Cavendish, III duca del Devonshire | William Cavendish, III duca di Devonshire | William Cavendish, IV duca del Devonshire |
| William Cavendish, IV duca di Devonshire | William Cavendish, marchese di Hartington | William Cavendish, V duca del Devonshire |
| William Cavendish, V duca di Devonshire | William Cavendish, VI duca del Devonshire | William Cavendish, VI duca di Devonshire |
| William Cavendish, VII duca di Devonshire | William Cavendish-Bentinck | William Cavendish-Bentinck, III duca di Portland |
| William Cavendish-Bentinck, VI duca di Portland | William Cavendish-Bentinck, VII duca di Portland | William Caxton |
| William Cazalet | William César de Oliveira | William Cecil |
| William Cecil Campbell | William Cecil Clayton | William Cecil, 1° Barone Burghley |
| William Cecil, 1º Barone Burghley | William Cecil, I barone Burghley | William Cecil, II conte di Salisbury |
| William Cecil, III marchese di Exeter | William Celestino da Silva | William Challee |
| William Chalmers | William Chalmers (disambigua) | William Chalmers (hockeista su ghiaccio) |
| William Chamberlayne | William Chambers | William Chambers (architetto) |
| William Chambers (politico) | William Chambers, Joseph Wilton, Joshua Reynolds | William Champion |
| William Chandler Roberts-Austen | William Chang | William Chang Suk Ping |
| William Chang Suk-ping | William Chann McRae | William Chapman Hewitson |
| William Chappell | William Charles Athersmith | William Charles Ayers |
| William Charles DeMott II | William Charles Fitch | William Charles Hay |
| William Charles Linnaeus Martin | William Charles Littlejohn | William Charles Lunalilo |
| William Charles Macready | William Charles Marshall | William Charles Renshaw |
| William Charles Ross | William Charles Skurla | William Charles Williams |
| William Charles Wurtenburg | William Chase Daniel | William Chatterton Dix |
| William Chauvenet | William Chester Minor | William Cheung |
| William Cheyne | William Chidi Njoku | William Child-Villiers |
| William Child-Villiers, X conte di Jersey | William Childs Westmoreland | William Ching |
| William Chip Banks | William Chiroque | William Chiroque Medardo |
| William Chmielewski | William Cholmondeley | William Cholmondeley, III marchese di Cholmondeley |
| William Christian | William Christian Boeving | William Christian Bullitt |
| William Christian Bullitt Jr. | William Christie | William Christie (astronomo) |
| William Christopher Bruin | William Christopher Handy | William Christopher Pakenham |
| William Christopher Swinney | William Christopher Zeise | William Christy Cabanne |
| William Chrystie Miller | William Churchill de Mille | William Clarence Eckstine |
| William Clarence Sarpalius | William Clark | William Clark (arciere) |
| William Clark Gable | William Clark Styron | William Clarke |
| William Clarke Hinkle | William Clarke Quantrill | William Claude Rains |
| William Claxton | William Clay Matthews III | William Claye |
| William Clayton | William Clayton (funzionario) | William Clayton (mormone) |
| William Clayton (personaggio) | William Clayton (presbitero) | William Cleary |
| William Clegg | William Cleite Boaventura | William Cleland |
| William Clem | William Clemens | William Cliff |
| William Clifford | William Clifford (attore) | William Clifford Musselman |
| William Clintard Robinzine | William Clinton | William Clinton Clark |
| William Clothier | William Clyde Elliott | William Coales |
| William Cobb | William Cobbett | William Cobbold |
| William Coblentz | William Cochrane | William Cochrane, I conte di Dundonald |
| William Cockburn | William Codling | William Cohen |
| William Colby | William Coldingham Masters Nicholson | William Coleman |
| William Collazo | William Collier | William Collier (attore 1866) |
| William Collier (attore 1902) | William Collier Jr. | William Collier Sr. |
| William Collins | William Collins Whitney | William Collum |
| William Coltman | William Colton Shires | William Compton |
| William Compton, I conte di Northampton | William Compton, IV marchese di Northampton | William Compton, V marchese di Northampton |
| William Condon | William Congdon | William Congreve |
| William Congreve (inventore) | William Congreve (scrittore) | William Conklin |
| William Connolly | William Connor | William Connor (ginnasta) |
| William Conrad | William Conrad Koch | William Conti |
| William Cook | William Cook Group | William Cooper |
| William Cordeiro Melo | William Corkine | William Cornwallis |
| William Cornwallis Harris | William Cornysh | William Cornysh (1430-1502) |
| William Cornysh (1465-1523) | William Correa | William Cosentini |
| William Costes | William Cotton (inventore) | William Cotton Oswell |
| William Cottrell | William Cottrill | William Courtenay |
| William Courtenay (arcivescovo) | William Courtenay, I conte di Devon | William Courtenay, II conte di Devon |
| William Courtenay, IX conte di Devon | William Courtenay, VII conte di Devon | William Courtenay, VIII conte di Devon |
| William Coutts Keppel | William Coventry, V conte di Coventry | William Cowhig |
| William Cowper | William Cowper (attore) | William Cox |
| William Cox (atleta) | William Craft | William Cragh |
| William Craig | William Craig Moore | William Cranch Bond |
| William Crapo Durant | William Crary Brownell | William Craven |
| William Craven, I conte di Craven | William Craven, II conte di Craven | William Craven, IV conte di Craven |
| William Craven, VI barone Craven | William Crawford Gorgas | William Crawford Williamson |
| William Criss | William Cristopher Handy | William Croft |
| William Crookes | William Crookshanks | William Crothers |
| William Crowley | William Crowninshield Endicott | William Cruickshank |
| William Culbertson III | William Cullen | William Cullen (giudice) |
| William Cullen Bryant | William Cumberland Cruikshank | William Cunningham |
| William Cunningham (cestista) | William Cunningham (economista) | William Cunningham (teologo) |
| William Cureton | William Curry Keller | William Curtis |
| William Curtis Chase | William Cushing | William Cuthbert Faulkner |
| William Cuthbertson | William D'Altri | William D'Amico |
| William d'Amico | William d'Aubigny | William d'Aubigny (Brito) |
| William d'Aubigny (disambigua) | William d'Aubigny (Pincerna) | William d'Aubigny, I conte di Arundel |
| William d'Aubigny, II conte di Arundel | William d'Aubigny, III conte di Arundel | William d'Aubigny, IV conte di Arundel |
| William D'Avenant | William D. Bloxham | William D. Byron |
| William D. Coolidge | William D. Davies | William D. Ford |
| William D. Foster | William D. Hoard | William D. Leahy |
| William D. Mitchell | William D. Moseley | William D. Mounce |
| William D. Phillips | William D. Russell | William D. Taylor |
| William Da Corean Hatcher | William da Silva Barbosa | William Da Silva Barbosa |
| William Dale Wall | William Dalen Clyburn | William Daley |
| William Dalrymple | William Dalton | William Dampier |
| William Danforth Mulliken | William Daniel Frawley | William Daniel Hillis |
| William Daniel Leahy | William Daniel McCafferty | William Daniel Phillips |
| William Daniel Sanders | William Daniels | William Danielsen |
| William Dar | William Darby | William Darling |
| William Dartmouth | William Davenant | William David Charles Carling |
| William David Christian | William David Conn | William David Coolidge |
| William David Daniels | William David Davies | William David Ford |
