| Melanie C | British singer-songwriter, ac… | 1974 |
| Pimp C | Deceased American rapper, 1/2… | 1973–2007 |
| Vico C | American rapper and singer of… | 1971 |
| José Cabantan | catholic archbishop | 1957 |
| James Branch Cabell | American author | 1879–1958 |
| Nicola Cabibbo | Italian physicist | 1935–2010 |
| Vince Cable | British Liberal Democrat poli… | 1943 |
| Meg Cabot | Novelist | 1967 |
| Facundo Cabral | Argentine singer and songwrit… | 1937–2011 |
| Milagros Cabral | female volleyball player from… | 1978 |
| Nathalie Cabrol | French American astrobiologist | 1963 |
| Lydia Cacho | Mexican journalist | 1963 |
| Dominic Cadbury | British businessman and membe… | 1940 |
| Edward Cadbury | British businessman | 1873–1948 |
| Pat Cadigan | science fiction author | 1953 |
| Michael Cadnum | American writer | 1949 |
| Jack Cady | American writer | 1932–2004 |
| Appius Claudius Caecus | Roman politician | |
| Cædmon | Ancient English poet | 657–680 |
| Herb Caen | American newspaper columnist | 1916–1997 |
| Irving Caesar | American composer and lyricist | 1895–1996 |
| Julius Caesar | Roman politician and general | -100–-44 BC |
| Basil of Caesarea | Christian Saint | 329–379 |
| Eusebius of Caesarea | Greek church historian | 265–339 |
| Jack Cafferty | American journalist | 1942 |
| John Cage | American avant-garde composer | 1912–1992 |
| Nicolas Cage | American actor | 1964 |
| Alessandro Cagliostro | Italian occultist | 1743–1795 |
| James Cagney | American actor and dancer | 1899–1986 |
| Abraham Cahan | Journalist, novelist, short s… | 1860–1951 |
| Brendan J. Cahill | | 1963 |
| Thomas Cahill | American scholar and writer | 1940 |
| Sammy Cahn | American lyricist, songwriter… | 1913–1993 |
| Chelsea Cain | American journalist and writer | 1972 |
| Herman Cain | American writer, businessman … | 1945 |
| James M. Cain | Novelist, short story writer,… | 1892–1977 |
| Peter Cain | figure skater | 1958 |
| Susan Cain | self-help writer | 1968 |
| Michael Caine | English actor and author | 1933 |
| Rachel Caine | American writer | 1962 |
| Santiago Ramón y Cajal | Spanish neuroscientist | 1852–1934 |
| Florian Cajori | American mathematician | 1859–1930 |
| Andrés Calamaro | Argentine musician and compos… | 1961 |
| Mark Calaway | American professional wrestler | 1965 |
| Alexander Calder | American artist | 1898–1976 |
| Nigel Calder | British science writer | 1931–2014 |
| Arthur Calder-Marshall | English novelist, essayist, c… | 1908–1992 |
| Sila María Calderón | Puerto Rican mayor | 1942 |
| Christopher Caldwell | American political writer | 1962 |
| Ian Caldwell | novelist | 1976 |
| Taylor Caldwell | Novelist | 1900–1985 |
| John Cale | Welsh composer, singer-songwr… | 1942 |
| Deb Caletti | American writer | 1963 |
| Calgacus | | |
| John B. Calhoun | American ethologist and behav… | 1917–1995 |
| John C. Calhoun | 7th Vice President of the Uni… | 1782–1850 |
| Patrick Califia-Rice | American writer | 1954 |
| Caligula | 3rd Emperor of Ancient Rome, … | 12–41 |
| Hortense Calisher | American novelist, short stor… | 1911–2009 |
| James Callaghan | Prime Minister of the United … | 1912–2005 |
| Liam Callanan | American writer | |
| Maria Callas | American-born Greek operatic … | 1923–1977 |
| Callimachus | ancient poet and librarian | -310–-240 BC |
| Northern Calloway | American actor | 1948–1990 |
| Jeanne Calment | French supercentenarian who h… | 1875–1934 |
| Charles Alexandre de Calonne | French statesman | 1734–1802 |
| Charles Stuart Calverley | British poet | 1831–1884 |
| Leonard Calvert | First governor of Maryland co… | 1606–1647 |
| John Calvin | French Protestant reformer | 1509–1564 |
| Italo Calvino | Italian journalist and writer… | 1923–1985 |
| Randolph Roque Calvo | Catholic bishop | 1951 |
| Joe Calzaghe | Welsh boxer | 1972 |
| Helder Camara | Brazilian Catholic priest, ar… | 1909–1999 |
| Hebe Camargo | Brazilian television host | 1929–2012 |
| Hernando Domínguez Camargo | Colombian poet | 1606–1659 |
| Catherine, Duchess of Cambridge | Wife of Prince William, Duke … | 1982 |
| Prince William, Duke of Cambridge | a member of the British royal… | 1982 |
| Richard Owen Cambridge | British poet | 1717–1802 |
| Charles Pratt, 1st Earl Camden | English lawyer, judge and Whi… | 1714–1794 |
| David Cameron | Former Prime Minister of the … | 1966 |
| James Cameron | Canadian film director | 1954 |
| Julia Cameron | American writer | 1948 |
| Kirk Cameron | American actor | 1970 |
| Molly Cameron | American racing cyclist | 1976 |
| Sharon Cameron | | |
| Ivan Camilleri | bishop of the roman-catholic … | 1969 |
| Luís de Camões | Portuguese poet | 1524–1580 |
| Lee Camp | American comedian, writer, an… | 1980 |
| Alyssa Campanella | American model | 1990 |
| Roy Campanella | baseball player; born 19 Nove… | 1921–1993 |
| Tommaso Campanella | Italian philosopher, theologi… | 1568–1639 |
| Bruce Campbell | | |
| John W. Campbell | American science fiction writ… | 1910–1971 |
| Joseph Campbell | American mythologist, writer … | 1904–1987 |
| Menzies Campbell | British Liberal Democrat poli… | 1941 |
| Mrs Patrick Campbell | British stage actress | 1895–1940 |
| Neve Campbell | Canadian actress | 1973 |
| Ramsey Campbell | English author | 1946 |
| Simone Campbell | American Roman Catholic Relig… | 1945 |
| T. Colin Campbell | American biochemist | 1934 |
