Gaston de Montheau, full name Guy Joseph Gaston de Montheau, (19 January 1828 – 16 February 1867) was a 19th-century French playwright and poet.
His plays were presented ont the most significant Parisian stages of the 19th century including the Théâtre des Variétés, Théâtre de la Gaîté, Théâtre du Vaudeville, Théâtre-Français.