| Richard Barnfield | English poet | 1574–1627 |
| John Basil Barnhill | | |
| Michel Barnier | French politician | 1951 |
| P.T. Barnum | American showman and business… | 1810–1891 |
| José Baroja | Chilean author and editor | 1983 |
| Alexander Baron | | |
| Simon Baron-Cohen | psychologist and author | 1958 |
| Sir Alexander Cockburn, 12th Baronet | Lord Chief Justice | 1802–1880 |
| Sir Charles Trevelyan, 1st Baronet | colonial administrator and hi… | 1807–1886 |
| Sir Francis Buller, 1st Baronet | British judge | 1746–1800 |
| Sir Frederick Pollock, 1st Baronet | British lawyer and Tory polit… | 1783–1870 |
| Sir Henry Hobart, 1st Baronet | English politician | 1554–1625 |
| Sir John Bayley, 1st Baronet | British judge | 1763–1841 |
| Sir Richard Temple, 1st Baronet | British politician | 1826–1902 |
| Sir Robert Hutchison, 1st Baronet | | |
| Sir Thomas Twisden, 1st Baronet | English politician | 1602–1683 |
| Sir William Hamilton, 9th Baronet | Scottish metaphysician (1788–… | 1788–1856 |
| Sir William Lawrence, 1st Baronet | British surgeon | 1783–1867 |
| Sir William Wyndham, 3rd Baronet | politician, died 1740 | 1688–1740 |
| Alfred Barr | American art historian | 1902–1981 |
| Bob Barr | Republican and Libertarian po… | 1948 |
| Donna Barr | comic book author and cartoon… | 1952 |
| James Barr | British bible scholar | 1924–2006 |
| Matthias Barr | British writer | 1831–1911 |
| Nicholas Barr | British economist | 1943 |
| Roseanne Barr | American actress, comedienne,… | 1952 |
| Stringfellow Barr | American writer | 1897–1982 |
| Luis Barragán | Mexican architect | 1902–1988 |
| Santa Barraza | | 1951 |
| Siad Barre | Head of State of Somalia | 1919–1995 |
| Weston La Barre | anthropologist | 1911–1996 |
| Maurice Barrès | French novelist | 1862–1923 |
| Lima Barreto | Brazilian writer | 1881–1922 |
| Amy Coney Barrett | American judge | 1972 |
| Andrea Barrett | American novelist and short s… | 1954 |
| James Lee Barrett | Tony Award winner, screenwrit… | 1929–1989 |
| Justin Barrett | Irish activist | 1971 |
| Michael Barrett | baseball catcher and manager | 1976 |
| Syd Barrett | English musician | 1946–2006 |
| Rubens Barrichello | Brazilian racing driver | 1972 |
| J. M. Barrie | Scottish writer | 1860–1937 |
| George Barrington | | |
| Chuck Barris | American game show creator, p… | 1929–2017 |
| Robert Barro | American classical macroecono… | 1944 |
| Carl Barron | Australian comedian | 1964 |
| Charles Barron | American politician | 1950 |
| Kayla Barron | American astronaut | 1987 |
| Isaac Barrow | English Christian theologian,… | 1630–1677 |
| John D. Barrow | British scientist | 1952–2020 |
| John Barrowman | Scottish-American actor, sing… | 1967 |
| Annie Barrows | writer | 1962 |
| Dave Barry | American writer | 1947 |
| Kevin Barry | 18 year old medical student a… | 1902–1920 |
| Lynda Barry | Cartoonist | 1956 |
| Marion Barry | American politician and forme… | 1936–2014 |
| Max Barry | Australian writer | 1973 |
| Michael Joseph Barry | Irish poet and political figu… | 1817–1889 |
| Paul Barry | | |
| Philip Barry | American playwright | 1896–1949 |
| Robert Barry | American artist | 1936 |
| Sebastian Barry | Irish author | 1955 |
| Drew Barrymore | American actress, director an… | 1975 |
| John Barrymore | American actor of stage, scre… | 1882–1942 |
| Vladimir Barsky | Russian film director | 1866–1936 |
| Lionel Bart | composer | 1930–1999 |
| Guillaume de Salluste Du Bartas | French writer | 1544–1590 |
| Alan Barth | American journalist | 1906–1979 |
| John Barth | American writer | 1930 |
| Karl Barth | Swiss Protestant theologian | 1886–1968 |
| Donald Barthelme | American writer, editor, and … | 1931–1989 |
| Roland Barthes | French philosopher, critic an… | 1915–1980 |
| Paulinus of St. Bartholomew | Austrian Carmelite missionary… | 1748–1806 |
| Richard Bartle | British writer | 1960 |
| Bruce Bartlett | American historian | 1951 |
| Jamie Bartlett | journalist and tech blogger; … | 1979 |
| Béla Bartók | Hungarian composer and pianist | 1881–1945 |
| Sophia Bartolai | | 2001 |
| Bruce Fairchild Barton | American author, politician a… | 1886–1967 |
| Clara Barton | American Civil War nurse | 1821–1912 |
| Derek Barton | English organic chemist | 1918–1998 |
| Joe Barton | United States congressional r… | 1949 |
| Joey Barton | English association football … | 1982 |
| William Bartram | American naturalist | 1739–1823 |
| Bernard Baruch | American businessman | 1870–1965 |
| Carl Barus | U.S. physicist | 1856–1935 |
| Mukta Barve | Indian actress | 1979 |
| John Barwa | Roman Catholic archbishop | 1955 |
| Heinz Barwich | German physicist | 1911–1966 |
| Mikhail Baryshnikov | Soviet-American dancer, chore… | 1948 |
| Massoud Barzani | Iraqi Kurdish politician | 1946 |
| Jacques Barzun | Historian | 1907–2012 |
| Basava | a 12th-century Hindu philosop… | 1134–1196 |
| John Bascom | American academic administrat… | 1827–1911 |
| John Basedow | TV Health and Fitness Persona… | |
| Arthur Llewellyn Basham | British historian and Indolog… | 1914–1986 |
| Henry Howarth Bashford | British physician and writer | 1880–1961 |
| Abu Bakar Bashir | Indoneisan Islamist | 1938 |
| Count Basie | American jazz musician, bandl… | 1904–1984 |
| Leonard Baskin | American sculptor | 1922–2000 |
| Jean-Michel Basquiat | American artist | 1960–1988 |
