Namesakes
Fictional Characters from Television:
1 character
Theodore "T. C." Calvin 1980 Magnum, P.I. 
Nobel Prize Winners:
1 chemistry
(chemistry) Melvin Calvin 1961
Notable Philosophers and Thinkers:
1 theologian
Jean Chauvin (a.k.a. Calvin) 1509-1564
Notable Scientists and Inventors:
1 chemist
Melvin Calvin 1911-1997