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- Jakob Balde, German latinist, court chaplain to Maximillian I
- John Ballard, English Jesuit priest executed for being involved in an attempt to assassinate Queen Elizabeth I of England
- Hans Urs von Balthasar, 20th-century theologian, Jesuit from 1928 to 1950 when he left the order to found a new community with Adrienne von Speyr
- Ignacio Martin Baro, martyr in El Salvador
- Augustin Barruel, French writer
- Michel Baudouin, Superior-General of the Louisiana Mission (1749 to 1763)
- Joseph Bayma, wrote "Molecular Mechanics" in 1866...
- Augustin Bea, German cardinal
- Johann Adam Schall von Bell, German missionary to China; astronomer
- Saint Robert Bellarmine, Italian theologian and Doctor of the Church
- Frans Jozef van Beeck, theologian
- Joop Beek, Dutch and Indonesian educator and presidential political advisor
- Saint John Berchmans, Jesuit Seminarian from Belgium
- Prosper Bernard, a Canadian missionary to China, killed by the Japanese
- Joaquin G. Bernas, Filipino Jesuit, constitutionalist, Dean Emeritus of the Ateneo Law School; former president of the Ateneo de Manila University, former Provincial Superior of the Philippine Province of the Society of Jesus
- Daniel Berrigan, American political activist, poet, and professor at Fordham University
- Giuseppe Biancani, a very early selenographer
- Jacob Bidermann, theologian and playwright - inspired Johann Wolfgang Goethe
- Jacques de Billy, "pen-pal" of Pierre de Fermat, many early contributions in number theory.
- Leopold Biwald, 18th-century Austrian physics professor and textbook author
- Saint Andrew Bobola, Polish missionary, killed by the Cossacks
- Saint Francis Borgia, third Superior General of the Society and exorcist
- Ruđer Bošković, Serbo-Italian scientist, many contributions to physics and astronomy
- Giovanni Botero, Italian thinker, discharged from the Society in 1579
- Joachim Bouvet, early missionary to China and a leading member of the Figurist movement
- Louis Bourdaloue, French preacher and orator
- William S. Bowdern, exorcist who inspired the novel and film The Exorcist
- Niklaus Brantschen, Swiss Jesuit, Zen master, author, and founder of the Lassalle-Institut
- Saint Jean de Brebeuf, 17th-century French-Canadian missionary and martyr
- Saint Alexander Briant, English martyr
- Frank Brennan, Officer of the Order of Australia for services to Aboriginal Australians
- Franz Brentano, philosopher who founded his own school of thought, the Brentano School...
- Saint John de Brito, Portuguese martyr and missionary to Madura, India (present-day Tamil Nadu)
- Claude Buffier, aimed to discover the ultimate principal of knowledge, praised by Voltaire
Read more about this topic: List Of Jesuits