Gaston Baty, whose full name was Jean-Baptiste-Marie-Gaston Baty, was a French playwright and theatre director. He was born in Pélussin, Loire, France.

In 1921, Baty formed his own company Les Compagnons de la Chimère [The Companions of the Chimera],:157 which mounted productions in a variety of Parisian theatres in the 1920s and 30s.:2 He was also a member of Le Cartel des Quatre [The Cartel of Four], a group of four directors in Paris who offered an alternative to both "academic and commercial theatre".:178 His stage adaptation of Gustave Flaubert's Madame Bovary was presented in an English translation on Broadway in 1937. Constance Cummings played the title role. Baty is also the author of a play entitled Dulcinea, which has been filmed twice and produced on television in 1989. It is an original play that takes its inspiration from Miguel de Cervantes's great novel Don Quixote and uses some of its characters. The second film version, made in 1963, starred Millie Perkins as Dulcinea, and was released in the U.S. as The Girl from La Mancha. He wrote Vie de l'art théatral, des origines a nos jours in 1932 with René Chavance.