Name
- Blake, John Hopwood, of the Geological Survey1
- Blanford, William Thomas, geologist1
- Bolton, Henry Carrington, American naturalist1
- Bolton, Herbert, FRSE1
- Bonney, Thomas George, geologist, 1833-19231
- Bornet, Jean-Baptiste Édouard, French botanist1
- Boulger, George Edward Simonds, naturalist1
- Bower, Frederick Orpen, botanist1
- Bowerbank, James Scott, FRS1
- Bowman, William, 1st Baronet, of Holmbury St Mary, opthalmic surgeon, 1816-18921
- Bowring, J. C.1
- Bowring, John, Knight, diplomat, politician and writer, 1792-18721
- Brady, George Stewardson, naturalist1
- Brady, Henry Bowman, naturalist1
- Bristow, Henry William, geologist1
- Broadbent, William Henry, 1st Baronet, physician1
- Broca, Pierre Paul, French anthropologist1
- Brocchi, Paul, naturalist1
- Brodie, Benjamin Collins, 1st Baronet, physiologist and surgeon, 1783-18621
- Brongniart, Adolphe Théodore, botanist1