- A
- Abderhalden ‹àpdërhaldën›, Emil
- Albrecht, Eugen
- Alessandrini, Giulio
- Alton, Joseph Wilhelm Eduard d'
- Anderson, William French
- Andrewes ‹ä´nduuʃ›, Cristopher Howard
- Arber ‹àrbër›, Werner
- Arnon ‹àanën›, Daniel Israel
- Arnàudi, Carlo
- Astaurov ‹astaùrëf›, Boris L´vovič
- Auerbach, Charlotte
- Avery, Oswald Theodore
- Axel ‹ä´ksël›, Richard
- Axelrod ‹ä´ks-›, Julius
- Ayala, Francisco José
- Àrtom, Camillo
- Baldi, Edgardo
- Balfour, Francis Maitland
- Baltimore, David
- Bancroft, Joseph
- Barbellion ‹baabèliën›, Wilhelm Nero Pilate
- Barfurth ‹bàrfurt›, Dietrich
- Barigòzzi ‹-zzi›, Claudio
- Barre-Sinoussi, Françoise
- Bassi, Agostino
- Bateson, William
- Battàglia, Bruno
- Beadle ‹bìidl›, George Wells
- Beccari, Nello
- Beljaev ‹b'iliàif›, Dmitrij Konstantinovič
- Belozerskij ‹b'ilaʃi̯èrsk'i›, Andrej Nikolaevič
- Benazzi ‹-zzi›, Mario
- Beneden ‹bënéedë›, Edouard van
- Bertalanffy ‹bèrtalanfi›, Ludwig von
- Bettencourt ‹bëtẽṅkórt›, Annibal
- Beyerinck ‹bèiëriṅk›, Martinus Willem
- Black ‹bläk›, Davidson
- Blaškovič ‹blà-›, Dionýz
- Blobel ‹blóobël›, Günter
- Blumenbach ‹blùumënbakℎ›, Johann Friedrich
- Bohn ‹bóon›, Georges
- Boháč ‹bòhaač›, Jan Křtitel
- Bolk ‹bòlk›, Louis
- Boll ‹bòl›, Franz Christian
- Bon de Saint-Hilaire ‹bõ dë sẽt ilèer›, François
- Bonner, James Frederick
- Bonnet, Charles
- Bose ‹bóse›, Sir Jagadis Chunder (o Chandra)
- Bottazzi ‹-zzi›, Filippo
- Boule, Pierre-Marcelin
- Boveri ‹-ée-›, Theodor
- Boyd Orr ‹bòid òo›, John, barone di Brechin
- Boyd, William Clouser
- Boyer, Herbert W
- Brachet ‹brašè›, Albert
- Brachet, Jean
- Brenner, Sydney
- Bridges ‹brìğiʃ›, Calvin Blackman
- Brumpt ‹brö̃t›, Émile