| Augustine Birrell | British politician | 1850–1933 |
| John Birtwhistle | English poet | 1946 |
| Harrison Birtwistle | British composer | 1934 |
| Óscar Elías Biscet | Cuban activist | 1961 |
| Anne Bishop | American fiction writer | 1955 |
| Elizabeth Bishop | American poet | 1911–1979 |
| Isabel Bishop | American painter | 1902–1988 |
| Jim Bishop | American journalist and author | 1907–1987 |
| Michael Bishop | American writer | 1945 |
| Otto von Bismarck | German statesman, Chancellor … | 1815–1898 |
| Otto von Bismark | German statesman, Chancellor … | 1815–1898 |
| Ram Prasad Bismil | revolutionary, poet & writer | 1897–1927 |
| Tom Bissell | American journalist | 1974 |
| Paulo Bitencourt | | 1966 |
| Mark Bittman | American journalist, food wri… | 1950 |
| Wilhelm Bittrich | German general | 1894–1979 |
| Cedric Bixler-Zavala | American singer | 1974 |
| Georges Bizet | French composer | 1838–1875 |
| Björk | Icelandic singer-songwriter | 1965 |
| Magnus Björnstjerna | Swedish count and general (17… | 1779–1847 |
| Gerrit Blaauw | Dutch computer scientist | 1924–2018 |
| Aloe Blacc | American soul singer, rapper … | 1979 |
| Bob Black | American anarchist | 1951 |
| Campbell Black | Scottish author | 1944–2013 |
| Conrad Black | Canadian-born newspaper publi… | 1944 |
| Holly Black | American children's fiction w… | 1971 |
| Hugo Black | U.S. Supreme Court justice | 1886–1971 |
| Jack Black | American actor, comedian, mus… | 1969 |
| Jenna Black | American writer | 1965 |
| Lewis Black | American stand-up comedian, a… | 1948 |
| Michael Ian Black | American comedian, actor, wri… | 1971 |
| Pippa Black | actress | 1982 |
| Richard H. Black | American politician | 1944 |
| Shane Black | American actor, screenwriter … | 1961 |
| Colin Blackburn, Baron Blackburn | British judge | 1813–1896 |
| John Morley, 1st Viscount Morley of Blackburn | British Liberal statesman, wr… | 1838–1923 |
| Marsha Blackburn | American politician | 1952 |
| Olly Blackburn | Film director and screenwriter | |
| Simon Blackburn | British academic philosopher | 1944 |
| Valentine Blacker | British colonial administrator | 1778–1826 |
| William Blacker | | |
| John Stuart Blackie | Scottish scholar and man of l… | 1809–1895 |
| Malorie Blackman | Author | 1962 |
| Nicole Blackman | American musician | 1971 |
| Richard Blackmore | English poet and physician | 1654–1729 |
| Ritchie Blackmore | British guitarist and songwri… | 1945 |
| Susan Blackmore | British writer and academic | 1951 |
| Harry Blackmun | Associate Justice of the Supr… | 1908–1999 |
| R. P. Blackmur | American literary critic | 1904–1965 |
| Terri Blackstock | American writer | 1957 |
| William Blackstone | English jurist, judge and Tor… | 1723–1780 |
| Antoinette Brown Blackwell | American minister | 1825–1921 |
| Elizabeth Blackwell | England-born American physici… | 1821–1910 |
| Nigel Blackwell | | |
| Algernon Blackwood | English short story writer an… | 1869–1951 |
| Richard Blackwood | British comedian | 1972 |
| Rubén Blades | Panamanian musician, singer, … | 1948 |
| Rod Blagojevich | Former Governor of Illinois | 1956 |
| Manolo Blahnik | Spanish fashion designer | 1942 |
| David Blaine | American illusionist and endu… | 1973 |
| James G. Blaine | American Republican politician | 1830–1893 |
| Geoffrey Blainey | Australian historian | 1930 |
| Cherie Blair | British barrister and wife of… | 1954 |
| Hugh Blair | British philosopher | 1718–1800 |
| Leonard Paul Blair | Catholic archbishop | 1949 |
| Linda Blair | actress, producer, animal rig… | 1959 |
| Robert Blair | British writer | 1699–1746 |
| Tony Blair | former Prime Minister of the … | 1953 |
| James A. Blaisdell | American academic | 1867–1957 |
| James Blake | American tennis player | 1979 |
| Michael Blake | American writer | 1945–2015 |
| Peter Blake | British artist | 1932 |
| Quentin Blake | English cartoonist, illustrat… | 1932 |
| William Blake | English Romantic poet and art… | 1757–1827 |
| Colin Blakemore | British neuroscientist | 1944 |
| Art Blakey | American jazz drummer and ban… | 1919–1990 |
| Jolene Blalock | actress | 1975 |
| Raymond Blanc | French chef | 1949 |
| Olivier Blanchard | French economist | 1948 |
| Samuel Laman Blanchard | British author and journalist | 1804–1845 |
| Cate Blanchett | Australian actress | 1969 |
| David Blanchflower | British economist | 1952 |
| Maurice Blanchot | French writer, philosopher, a… | 1907–2003 |
| Cuauhtémoc Blanco | Mexican footballer | 1973 |
| Jesús Tirso Blanco | Argentinian bishop | 1957–2022 |
| Tia Blanco | | 1997 |
| William H. P. Blandy | American admiral | 1890–1954 |
| Steve Blank | American businessman | 1953 |
| Louis Auguste Blanqui | French socialist and politica… | 1805–1881 |
| Marlena de Blasi | | 1952 |
| Bill de Blasio | American politician and mayor… | 1961 |
| Sarah Blasko | Australian singer-songwriter,… | 1976 |
| Robert Blatchford | British writer and activist | 1851–1943 |
| William Peter Blatty | American writer and filmmaker | 1928–2017 |
| Mark Blaug | British economist | 1927–2011 |
| Helena Petrovna Blavatsky | occult writer | 1831–1891 |
| Hazel Blears | British politician | 1956 |
| Alexis Bledel | American actress | 1981 |
| Ann Eliza Bleecker | American poet, correspondent | 1752–1783 |
| Gisela Bleibtreu-Ehrenberg | German ethnologe, sociologe, … | 1929 |
