Pierre Robert Le Cornier de Cideville (2 September 1693 – 5 March 1776), was a French magistrate and scholar, co-founder of the Academy of Rouen.

In addition to his assiduous study of law, he managed to dabble in music, painting and poetry, having, at age eighteen, won a prize at the Palinods Academy of Rouen.

Cideville possessed an epigrammatic talent which is evidenced in one of his letters where his recounts his pen-friend how Voltaire had to leave very hastily Déville on the day a farmer he had cured from a fever, mistook him for a sorcerer.

Although they never went into print, there exists, among the manuscripts he bequeathed, along with his extensive library, to the Academy of Rouen, a collection entitled Poésies diverses et curieuses.

A second part of this collection entitled Journal depuis juin 1743 jusqu’en 1775, can be found, with a portrait of its author, at the Public Library of Rouen.