| James McCosh | British philosopher | 1811–1894 |
| Thaddeus McCotter | American politician | 1965 |
| Frank McCourt | Irish-American teacher and Pu… | 1930–2009 |
| Malachy McCourt | Irish-American actor, writer … | 1931 |
| Bert McCracken | American musician | 1982 |
| Cheyenne McCray | writer | 1965 |
| Carson McCullers | American writer | 1917–1967 |
| Don McCullin | artist | 1935 |
| Ian McCulloch | singer, musician | 1959 |
| John Ramsay McCulloch | Scottish economist, author an… | 1789–1864 |
| Warren S. McCulloch | American neuroscientist | 1898–1969 |
| Colleen McCullough | Australian author | 1937–2015 |
| Peter A. McCullough | American cardiologist and med… | 1962 |
| Ed McCully | American Christian missionary | 1927–1956 |
| Chris McDaniel | American politician | 1971 |
| Jeffrey McDaniel | American writer | 1967 |
| Lurlene McDaniel | American writer | 1944 |
| Val McDermid | Scottish crime writer | 1955 |
| Alice McDermott | American writer, novelist, es… | 1953 |
| Andy McDermott | British writer | 1974 |
| Jack McDevitt | American novelist, Short stor… | 1935 |
| Ian McDiarmid | Scottish actor and stage dire… | 1944 |
| Ian McDonald | British science fiction novel… | 1960 |
| Megan McDonald | American children's literatur… | 1959 |
| Bob McDonnell | American attorney and politic… | 1954 |
| John McDonnell | British politician (born 1951) | 1951 |
| Neal McDonough | American actor | 1966 |
| William McDonough | American architect | 1951 |
| Frances McDormand | American actress | 1957 |
| Christopher McDougall | American journalist and writer | 1962 |
| John A. McDougall | American physician | 1947 |
| William McDougall | british psychologist | 1871–1938 |
| Josh McDowell | American writer | 1939 |
| Malcolm McDowell | English actor | 1943 |
| Kayleigh McEnany | American political commentato… | 1988 |
| Brian McEniff | Irish Gaelic football player … | 1942 |
| John McEnroe | US tennis player | 1959 |
| Reba McEntire | American country music artist… | 1955 |
| Ian McEwan | British author | 1948 |
| Cody McFadyen | Cody McFadyen | 1968 |
| Sallie McFague | American feminist and theolog… | 1933–2019 |
| Michael McFaul | American academic and diplomat | 1963 |
| William McFee | American writer | 1881–1966 |
| Bob McFerrin | | |
| John McGahern | writer | 1934–2006 |
| Stacy McGaugh | American astronomer | 1964 |
| Janice McGeachin | American congresswoman in Ida… | 1963 |
| JaVale McGee | American basketball player | 1988 |
| Thomas D'Arcy McGee | Canadian politician | 1825–1868 |
| Alison McGhee | American novelist | 1960 |
| Donald McGill | British artist | 1875–1962 |
| Phyllis McGinley | writer and poet | 1905–1978 |
| Colin McGinn | British philosopher | 1950 |
| William McGonagall | weaver, actor, poet | 1825–1902 |
| Patrick McGoohan | actor | 1928–2009 |
| Roger McGough | British writer and poet | 1937 |
| Cammie McGovern | | |
| George S. McGovern | American politician, Congress… | 1922–2012 |
| Kathleen McGowan | American writer | 1963 |
| Rose McGowan | American actress | 1973 |
| Alister McGrath | Northern Irish priest and aca… | 1953 |
| Katie McGrath | Irish actress | 1983 |
| Eloise Jarvis McGraw | American writer | 1915–2000 |
| John McGraw | American baseball player, man… | 1873–1934 |
| Phil McGraw | American television host, psy… | 1950 |
| Tim McGraw | American country singer | 1967 |
| Conor McGregor | Irish mixed martial artist an… | 1988 |
| Douglas McGregor | American professor | 1906–1964 |
| Ewan McGregor | British actor | 1971 |
| Jon McGregor | Bermudian writer | 1976 |
| Aaron McGruder | American cartoonist | 1974 |
| Thomas McGuane | American novelist | 1939 |
| Barry McGuigan | Irish-British boxer | 1961 |
| Al McGuire | American basketball player an… | 1928–2001 |
| James McHenry | | |
| Robert Murray M'Cheyne | British writer | 1813–1843 |
| Mark McHugh | Gaelic footballer | 1990 |
| Martin McHugh | Gaelic football player | 1961 |
| Doug McIlroy | American computer scientist, … | 1932 |
| Jay McInerney | American writer | 1955 |
| Gavin McInnes | Canadian writer | 1970 |
| Jane McIntosh | Scottish archaeologist and au… | 1950 |
| Michael McIntyre | British comedian | 1976 |
| Vonda N. McIntyre | American writer | 1948–2019 |
| Ami McKay | Canadian writer | 1968 |
| Claude McKay | Jamaican American writer, poet | 1889–1948 |
| David O. McKay | President of The Church of Je… | 1873–1970 |
| Don McKay | Canadian poet | 1942 |
| Hilary McKay | English children's writer | 1959 |
| John McKay | American football player and … | 1923–2001 |
| Erin McKean | Lexicographer, dictionary edi… | 1971 |
| Kip McKean | minister | 1954 |
| Thomas McKean | American politician (1734-181… | 1734–1817 |
| Thomas McKean | American politician (1734-181… | 1734–1817 |
| Thomas McKean | American politician | 1734–1817 |
| Thomas McKean | American politician (1734-181… | 1734–1817 |
| Robert McKee | American academic specialised… | 1941 |
| William McKeen | American academic | 1954 |
| Ian McKellen | British actor | 1939 |
| Richard McKenna | American writer | 1913–1964 |
