•
Anton Bacalbașa (1865–1899) – Romanian Marxist and pacifist •
Eva Bacon (1909–1994) – Australian socialist, feminist, pacifist •
Gertrud Baer (1890–1981) – German Jewish peace activist, and a founding member of the
Women's International League for Peace and Freedom •
Joan Baez (born 1941) – American anti-war protester, inspirational singer •
Matilde Bajer (1840–1934) – Danish feminist and peace activists •
Ella Baker (1903–1986) – African-American civil-rights activist, feminist, pacifist •
Emily Greene Balch (1867–1961) – American pacifist, leader of
Women's International League for Peace and Freedom, and 1946
Nobel Peace Prize laureate •
Ernesto Balducci (1922–1992) – Italian priest and peace activist •
Roger Nash Baldwin (1884–1981) – American pacifist, leader in Civil Liberties Bureau of
American Union Against Militarism, supporting conscientious objectors to World War I; lifelong civil libertarian, co-founder of
ACLU •
Edith Ballantyne (1922–2025) – Czech-Canadian peace activist •
Mary Barbour (1875–1958) – Scottish socialist, a founder of
the Women's Peace Crusade, local councillor and magistrate; involved in the
Red Clydeside movement •
Daniel Barenboim (born 1942) – pianist and conductor, joint founder – with
Edward Said – of the
West–Eastern Divan Orchestra, citizen of Argentina, Israel, Palestine and Spain •
Christine Ross Barker (1866–1940) – Canadian pacifist and suffragist •
Ludwig Bauer (1878–1935) – Austro-Swiss writer and pacifist •
Archibald Baxter (1881–1970) – New Zealand pacifist, socialist, and anti-war activist •
Alaide Gualberta Beccari (1842–1906) – Italian feminist, pacifist and social reformer •
Yolanda Becerra (born 1959) – Colombian feminist and peace activist •
Henriette Beenfeldt (1878–1949) – Danish peace activist •
Harry Belafonte (1927–2023) – American anti-war protester, performer •
Carlos Filipe Ximenes Belo (born 1948) –
East Timorese bishop,
Nobel Peace Prize laureate •
Pope Benedict XV (1854–1922, Pope 1914–1922) – advocated peace throughout WW1; opposed aerial warfare; promoted humanitarian initiatives to protect children, prisoners of war, the wounded and missing persons •
Medea Benjamin (born 1952) – American writer, organizer, co-founder of the anti-militarist
Code Pink •
Tony Benn (1925–2014) – British Member of Parliament, anti-war and anti-imperialism campaigner, one of the founders of the
Stop the War Coalition •
Meg Beresford (born 1937) – British activist,
European Nuclear Disarmament movement •
Daniel Berrigan (1921–2016) – American anti–
Vietnam War protester, Jesuit (Catholic) priest, poet, writer, anti-nuke and war •
Frida Berrigan (born 1974) – American antinuclear activist •
Philip Berrigan (1923–2002) – American anti–
Vietnam War protester, former Josephite (Catholic) priest, writer, anti-nuke and war •
James Bevel (1936–2008) – American civil-rights activist, anti-
Vietnam War leader, organizer •
Vinoba Bhave (1895–1982) – Indian, Gandhian, teacher, writer, organizer •
William J. Bichsel ("Bix") (1928–2015) – American Jesuit priest and antinuclear activist •
Albert Bigelow (1906–1993) – former US Navy officer turned pacifist, skipper of the first vessel to attempt disruption of the atmospheric testing of nuclear weapons •
Ione Biggs (1916–2005) – American human-rights activist •
Lotte Binder (1888–1930) – Transylvanian pacifist feminist •
Doris Blackburn (1889–1970) – Australian social reformer, politician, pacifist •
Janet Bloomfield (1953–2007) – British peace and disarmament campaigner, chair of the
Campaign for Nuclear Disarmament •
Bhikkhu Bodhi (born 1944) – American Theravada Buddhist monk and founder of
Buddhist Global Relief •
Kees Boeke (1884–1966) – Dutch educator, missionary and pacifist •
Beatrice Boeke-Cadbury (1884–1976) – English social activist, educator, Quaker missionary and pacifist •
Maria Bolin (1847–1919) – Swedish activist for women's suffrage and peace •
Carl Bonnevie (1881–1972) – Norwegian jurist and peace activist •
Bono (born 1960) – Irish singer-songwriter, musician, venture capitalist, businessman, and philanthropist; born
Paul David Hewson •
Charles-Auguste Bontemps (1893–1981) – French anarchist, pacifist, writer •
John Bosco (1815–1888) – Italian priest, educator and writer, who devoted his life to disadvantaged youth; founded the
Salesians of Don Bosco and developed the nonviolent
Salesian Preventive System of teaching •
Elise M. Boulding (1920–2010) – Norwegian-born American sociologist, specialising in academic peace research •
Albert Bourderon (1858–1930) – French socialist and pacifist •
Julia Boutros – Lebanese singer, humanitarian activist, and pacifist known as the "Lioness of Lebanon" •
José Bové (born 1953) – French farmer, politician, pacifist •
Norma Elizabeth Boyd (1888–1985) – African-American politically active educator, children's rights proponent, pacifist •
Heloise Brainerd (1881–1969) – American women activist, pacifist •
Sophonisba Breckinridge (1866–1948) – American educator, social reformer, pacifist •
Lenni Brenner (born 1937) – American
civil-rights activist, opposed to the
Vietnam War and strong
opponent of Zionism •
Robin Briant (born 1939) – New Zealand doctor and chair of
International Physicians for the Prevention of Nuclear War •
Pierre Brizon (1878–1923) – French politician and pacifist •
Vera Brittain (1893–1970) – British writer, pacifist •
José Brocca (1891–1950) – Spanish activist, international delegate
War Resisters' International, organiser of relief efforts during the Spanish Civil War •
Hugh Brock (1914–1985) – lifelong British pacifist and editor of
Peace News between 1955 and 1964 •
Peter Brock (1920–2006) – British-born Canadian pacifist historian •
Fenner Brockway (1888–1988) – British politician and
Labour MP; humanist, pacifist and anti-imperialist; opposed conscription and founded the
No-Conscription Fellowship in 1914; first chairperson of the
War Resisters' International (1926–1934); founder member of the
Campaign for Nuclear Disarmament and of the charity
War on Want •
Emilia Broomé (1866–1925) – Swedish politician, feminist and peace activist •
Brigid Brophy (1929–1995) – British novelist, feminist, pacifist •
Olympia Brown (1835–1926) – American theologist, suffragist, pacifist •
Mary Brownell (1929–2017) – Liberian peace activist who mobilised women to engage in the
peacebuilding process following the
Liberian Civil Wars •
Imrana Alhaji Buba (born 1992) - Nigerian peace activist and researcher •
Elihu Burritt (1810–1879) – American diplomat, social activist •
Caoimhe Butterly (born 1978) – Irish peace and human-rights activist •
Maria C. Buțureanu (1872–1919) – Romanian educator and feminist pacifist •
Charles Roden Buxton (1875–1942) – British
Liberal and later
Labour MP, philanthropist and peace activist, critical of the
Treaty of Versailles : == C ==