Léon Lévy Brunswick (Paris, 20 April 1805 – Le Havre, 29 July 1859) was a French playwright. He started as a journalist before turning to theater. He is the author of many comedies with Jean-François Bayard, Émile Vanderburch, and Arthur de Beauplan such as Boccaccio, or the Prince of Palmero by Franz von Suppé. But it is with Adolphe de Leuven that he is known for his greatest successes, notably booklets of comic operas by Adolphe Adam (Le Brasseur de Preston, Le Postillon de Lonjumeau, Le Roi d'Yvetot). He has also published under the pseudonym of Leo Lhérie.