The title of this research is "An Analysis Of Postmodernism In John Barth‟s Short Story “Lost In The Funhouse". The objectives of this research are to find out how intertextuality portrayed in the short story and how John Barth violate level of narrative in the short story. The concepts of intertextuality and violation of narrative are analyzed by using Victoria Orlowski‘s theory. Qualitative research method is used in analyzing this research. The result of this research shows that The author assume that metafiction is valuable because it exposes the limits and artifices of literary realism and self- consciously, and systematically draws attention to its status as an artefact in order to pose questions about the relationship between fiction and reality.