Si tant est que l'opéra soit du théâtre is a reflective essay by renowned French theater and opera director Patrice Chéreau, focusing on his experience staging the world premiere of Alban Berg’s complete opera *Lulu*. The work explores the intersection of operatic performance and theatrical direction, questioning whether opera can truly be considered a form of theater. Drawing from his deep engagement with Berg’s score and dramatic structure, Chéreau offers insights into the challenges and philosophies of modern operatic staging. Originally published in 1992 by Éditions Ombres, this concise yet intellectually rich text serves as both a personal meditation and a critical contribution to contemporary discourse on opera production.