Jean-Louis Calandrini (August 30, 1703 – December 29, 1758) was a Genevan scientist.

He was the author of some studies on the aurora borealis, comets, and the effects of lightning, as well as of an important but unpublished work on flat and spherical trigonometry.

[1] His father was a pastor, also named Jean-Louis, and his mother was Michée Du Pan.

In 1724, Calandrini was named mathematics professor at the same time as Gabriel Cramer, but he first undertook a three-year journey to France and England.

He also played an active role on the political scene of Geneva.