B
- Milan Babić (1956–2006), Croatian Serb and prime minister of Republic of Serb Krajina. Sentenced to 13 years following agreement
- Erich von dem Bach-Zelewski (1899–1972), German official and SS officer
- László Baky (1898–1946), Hungarian Interior Ministry official
- Awad Hamed al-Bandar (1945–2007), Iraqi chief judge, sentenced to death
- Klaus Barbie (1913–1991), German Gestapo officer
- Laszlo Bardossy (1890–1946), Hungarian Prime Minister
- Franz Anton Basch (1901–1946), German Nazi leader in Hungary
- Gottlob Berger (1897–1975), German SS official
- Werner Best (1903–1989), German Plenipotentiary of Denmark
- Hans Biebow (1902–1947), chief of German Administration of the Łódź Ghetto
- Tihomir Blaškić (born 1960), Bosnian Croat sentenced to 45 years, changed to 9 years following appeal
- Paul Blobel (1894–1951), German Einsatzgruppe C official
- Martin Ludwig Bormann (1900–c. 1945), German Party Chancellor, Tried at Nuremberg in absentia
- Herbert Böttcher (1907–1950), German SS and Police Leader in Radom, Poland
- Philipp Bouhler (1899–1945), German Führer Chancellory official
- Viktor Brack (1904–1948), German Führer Chancellory official
- Otto Bradfisch (1903–1994), member of the German SS Obersturmbannführer, Leader of Einsatzkommando 8 of Einsatzgruppe B of the Security Police (Sicherheitspolizei) and the SD, and Commander of the Security Police in Litzmannstadt (Łódź) and Potsdam
- Miroslav Bralo (born 1967), Bosnian Croat member of the "Jokers" anti-terrorist platoon, sentenced to 20 years
- Karl Brandt (1904–1948), German Plenipotentiary for Health official
- Rudolf Brandt (1909–1948), secretary of Heinrich Himmler
- Walther von Brauchitsch (1881–1948), German Commander-in-Chief of the Army
- Werner Braune (1909–1951), German Einsatzgruppe D official
- Radoslav Brdjanin (born 1948), Bosnian Serb sentenced to 32 years (30 following appeal)
- Fernand de Brinon (1885–1947), French collaborator and member of the Vichy government
- Josef Bühler (1904–1948), German Generalgouvernement official
Read more about this topic: List Of Convicted War Criminals