Cant
- Cesa
- Cantor
- Cantor , Georg Ferdinand Ludwig Philipp
- Cardano , Gerolamo
- Carnot , Nicolas Leonard Sadi
- Carothers , Wallace Hume
- Carrel , Alexis
- Cartan , Elie Joseph
- Carter , Brandon
- Carver , George Washington
- Casimir , Hendrik Brugt Gerhard
- Caspersson , Torbjörn Oskar
- Cassini , Giovanni Domenico
- Castner , Hamilton Young
- Castner, Hamilton Young
- Cauchy , Baron Augustin Louis
- Cavalieri , Francesco Bonaventura
- Cavalli-Sforza , Luigi Luca
- Cavendish
- Cavendish , Henry
- Cavendish , Margaret
- Caventou , Jean Bienaimé
- Cayley , Arthur
- Cech
- Cech , Thomas Robert
- Celsius , Anders
- Cerenkov , Pavel Alekseyevich