| Frank Bruno | British boxer | 1961 |
| Giordano Bruno | Italian philosopher, mathemat… | 1548–1600 |
| Doyle Brunson | American poker player | 1933–2023 |
| Paul Brunton | British philosopher | 1898–1981 |
| Günter Brus | Austrian artist | 1938 |
| Steven Brust | American fantasy and science … | 1955 |
| Robert Brustein | American writer | 1927 |
| Marcus Junius Brutus | Roman politician | -85–-42 BC |
| Jean de La Bruyère | 17th-century French writer an… | 1645–1696 |
| Albert Bryan | Governor of the United States… | 1968 |
| Daniel Bryan | American professional wrestler | 1981 |
| Richard Bryan | | |
| William Jennings Bryan | United States Secretary of St… | 1860–1925 |
| Anita Bryant | American singer | 1940 |
| Bear Bryant | American college football coa… | 1913–1983 |
| Edwin Bryant | American indologist | 1957 |
| Kobe Bryant | American basketball player | 1978–2020 |
| William Cullen Bryant | American romantic poet and jo… | 1794–1878 |
| James Bryce, 1st Viscount Bryce | British academic, jurist, his… | 1838–1922 |
| Bill Bryson | American author | 1951 |
| Bryan Bryson | researcher (ORCID 0000-0003-1… | |
| Zbigniew Brzeziński | Polish-American political sci… | 1928–2017 |
| bts | ruler of the Akkadian Empire | |
| Ajahn Maha Bua | monk | 1913–2011 |
| Martin Buber | German Jewish Existentialist … | 1878–1965 |
| Maurice Bucaille | French physician and author | 1920–1998 |
| John Buchan | British politician | 1875–1940 |
| James Buchanan | American politician, 15th Pre… | 1791–1868 |
| James M. Buchanan | American economist | 1919–2013 |
| Mark Buchanan | American physicist | 1961 |
| Patrick Buchanan | American politician and comme… | 1938 |
| Robert Williams Buchanan | Scottish poet, novelist and d… | 1841–1901 |
| Frank Buchman | Evangelical theologist | 1878–1961 |
| Georg Büchner | German dramatist and writer o… | 1813–1837 |
| Art Buchwald | journalist, humorist, United … | 1925–2007 |
| Chris Buck | | |
| Jack Buck | American sportscaster | 1924–2002 |
| Joe Buck | American sportscaster | 1969 |
| Pearl S. Buck | American writer | 1892–1973 |
| Tim Buck | Canadian politician | 1891–1973 |
| Richard Maurice Bucke | prominent Canadian psychiatri… | 1837–1902 |
| George Villiers, 2nd Duke of Buckingham | English statesman and poet | 1628–1687 |
| Lilia Buckingham | American actress, author and … | 2003 |
| Marcus Buckingham | British writer | 1966 |
| William Buckland | English clergyman, geologist … | 1784–1856 |
| Henry Thomas Buckle | English historian | 1821–1862 |
| Frank Buckles | United States Army soldier an… | 1901–2011 |
| Christopher Buckley | American writer | 1952 |
| Jeff Buckley | American singer, guitarist an… | 1966–1997 |
| Lord Buckley | American actor and comedian | 1906–1960 |
| Walter F. Buckley | American sociologist | 1922–2006 |
| Neal Buckon | American Roman Catholic bishop | 1953 |
| Salah Al Budair | Imaam at Masjid al-Nabawi | 1971 |
| Ted Budd | American politician | 1971 |
| Gautama Buddha | philosopher, reformer and the… | -563–-483 BC |
| Buddhaghosa | Indian writer | |
| Gersh Budker | Soviet physicist | 1918–1977 |
| Brent Budowsky | American journalist | 1952 |
| Algis Budrys | American writer | 1931–2008 |
| Frederick Buechner | Poet, novelist, short story w… | 1926 |
| Federico Buffa | Italian journalist, writer an… | 1959 |
| Jimmy Buffett | American singer–songwriter an… | 1946 |
| Warren Buffett | American business magnate, in… | 1930 |
| Georges-Louis Leclerc, Comte de Buffon | French natural historian | 1707–1788 |
| Gianluigi Buffon | Italian association football … | 1978 |
| Salwa Bugaighis | Libyan activist | 1963–2014 |
| Lois McMaster Bujold | Science Fiction and fantasy a… | 1949 |
| Nikolai Bukharin | Soviet politician | 1888–1938 |
| Charles Bukowski | American writer | 1920–1994 |
| NoViolet Bulawayo | Zimbabwean writer and educator | 1981 |
| Mikhail Bulgakov | Russian author primarily know… | 1891–1940 |
| Boris III of Bulgaria | Tsar of Bulgaria | 1894–1943 |
| John D. Bulkeley | United States Navy Medal of H… | 1911–1996 |
| Bart Bull | American journalist | |
| Emma Bull | American writer | 1954 |
| Hedley Bull | Australian academic | 1932–1985 |
| Sitting Bull | Hunkpapa Lakota medicine man … | 1831–1890 |
| Arthur Henry Reginald Buller | British–Canadian mycologist | 1874–1944 |
| Gerald Bullett | British writer | 1893–1958 |
| Sandra Bullock | American actress and producer | 1964 |
| Hans von Bülow | German musician | 1830–1894 |
| Rudolf Karl Bultmann | German theologian | 1884–1976 |
| Edward Bulwer-Lytton | English novelist, poet, playw… | 1803–1873 |
| Dmitri Bulykin | Russian association football … | 1979 |
| Rodger Bumpass | American character actor and … | 1951 |
| Ralph Bunche | American diplomat | 1904–1971 |
| Brooke Bundy | American actress | 1944 |
| Ted Bundy | American serial killer | 1946–1989 |
| Mario Bunge | Argentine philosopher and phy… | 1919 |
| Antonius Subianto Bunjamin | Indonesian catholic priest | 1968 |
| Alfred Bunn | British businessman, libretti… | 1796–1860 |
| Henry Cuyler Bunner | American writer | 1855–1896 |
| Basil Bunting | Poet | 1900–1985 |
| Luis Buñuel | film director | 1900–1983 |
| John Bunyan | English Christian writer and … | 1628–1688 |
| Michelangelo Buonarroti | Italian sculptor, painter, ar… | 1475–1564 |
| John Bura | Ukrainian Catholic bishop in … | 1944–2023 |
| Luther Burbank | American botanist, horticultu… | 1849–1926 |
| Geoffrey Burbidge | British astronomer | 1925–2010 |
| Michael Francis Burbidge | American Catholic bishop | 1957 |
