The Club des Hashischins (sometimes also spelled Club des Hashishins or Club des Hachichins), was a Parisian group dedicated to the exploration of drug-induced experiences, notably with hashish.
It was active from about 1844 to 1849 and counted the literary and intellectual elite of Paris among its members, including Dr. Jacques-Joseph Moreau, Théophile Gautier, Charles Baudelaire, Gérard de Nerval, Eugène Delacroix and Alexandre Dumas, père. Monthly "séances" were held at the Hôtel de Lauzun (at that time: Hôtel Pimodan) on the Île Saint-Louis.
Gautier wrote about the club in an article entitled "Le Club des Hachichin" published in the Revue des Deux Mondes in February 1846, recounting his recent visit. While he is often cited as the founder of the club, in the article he says he was attending their séances for the first time that evening and made clear that others were sharing a familiar experience with him.