Charles-Jacques-Louis-Auguste Rochette de La Morlière, called “Le Chevalier” , (22 April 1719 – 9 February 1785) was an 18th-century French playwright.
An unscrupulous schemer, La Morlière first sought the support of the party of Voltaire, applauding the verse of the master, and when he found himself sufficiently established at café Procope, became an entrepreneur of success and dramatic falls. Surrounded by a paid gang, he moved to the parterre, giving the signal for applause for authors who had offered him some dinners or a few louis, and the signal for whistles against those from whom he had received nothing. In order to replace the whistle that the police did not always tolerate, he had imagined a sort of protracted yawn that produced a disastrous effect.