Jean-Jacques Manget (or Johann Jacob Mangetus) (1652–1742) was a Genevan physician and writer. He was known for his work on epidemic diseases such as bubonic plague and tuberculosis. In addition to his own researches, he assiduously compiled preceding medical literature. With , he is considered one of the "great compilers" of knowledge in the areas of medicine, surgery and pharmacology. He also published a major collection of alchemical works, the Bibliotheca Chemica Curiosa (1702).