Jean-Charles Olin (d. after 1789) was one of the most important Parisian clockmakers of the late 18th century. The brother-in-law of clockmaker Jean-Gabriel Imbert, he initially worked independently, then became a master in 1776 and opened his own workshop in the enclos des Quinze-Vingts. With a rapidly growing reputation, in 1777 he was elected deputy of his corporation. Like the best clockmakers of his time, he looked to the finest bronziers for his clock cases, including Antoine Foullet, Robert Osmond and Jean-Joseph de Saint-Germain. His clocks were acquired by some of the most important 18th century collectors. Clocks by Olin are mentioned in the probate inventories of lawyer Jacques-Augustin Auvray, de Marie-Philippe Donneau, marquis de Visé, and the widow of the King’s secretary Louis Paris de Treffonds.