1. (noun)
Calvin, Melvin Calvin
- United States chemist noted for discovering the series of chemical reactions in photosynthesis (1911-)
2. (noun)
Calvin, John Calvin, Jean Cauvin, Jean Caulvin, Jean Chauvin
- Swiss theologian (born in France) whose tenets (predestination and the irresistibility of grace and justification by faith) defined Presbyterianism (1509-1564)