Caspar Stoll (Hesse-Kassel, probably between 1725 and 1730 – Amsterdam, December 1791) was a naturalist and entomologist, best known for the completion of De Uitlandsche Kapellen, a work on butterflies begun by Pieter Cramer. He also published several works of his own on other insect groups. Stoll's 1787 publication on stick insects, mantises, and their relatives is also well known. It was translated into French in 1813.