Postmodernism has fundamentally disrupted the epistemological and methodological underpinnings of contemporary historical practice by contesting assertions of objectivity, linear advancement, and monolithic grand narratives of history. Utilizing prominent theorists including Jean-François Lyotard, Michel Foucault, and Hayden White, alongside subsequent methodological discussions, this article analyzes the reconfiguration of the interplay among facts, narrative, language, and power within historiography as influenced by postmodernism. It initially delineates the theoretical foundations of postmodernism and the "linguistic turn," highlighting skepticism towards metanarratives and the emphasis on multiple, context-specific histories. Then it looks at some of the main ideas of postmodernism in historical writing, such as the textuality of sources, the constructed nature of narratives, the importance of discourse and representation, and the recovery of voices that have been pushed to the side. We talk about the methodological implications of textual analysis, reflexivity, interdisciplinarity, and micro-level or local histories, as well as their growing role in modern historiographical debates. The article also talks about the main criticisms of postmodernism, such as accusations of relativism, nihilism, and the "infantilization" of historical knowledge. It also looks at efforts to combine postmodern ideas with a renewed focus on evidence-based research. Lastly, it looks at what this means for history education and research in the global South, where postmodern ideas mix with postcolonial and subaltern ideas. The article says that postmodernist ideas don't get rid of historical knowledge or make all stories the same; instead, they promote more self-aware, diverse, and critically reflexive ways of interpreting history.