<p>This review article presents a comprehensive study of WO₃-based polymeric nanocomposites specially focusing on their multifaceted photocatalytic applications. We go over the history and rationale for the use of WO₃ in photocatalysis as well as its characteristics, such as its morphology, structure, electronic capabilities, and optical qualities. In addition to reviewing different synthesis and characterization strategies for WO₃-based polymeric nanocomposites, the photocatalytic mechanism of WO₃ is clarified. We talk about the uses of WO₃-based polymeric nanocomposites in water treatment and pollutant degradation, and we investigate how polymeric matrices affect photocatalytic activity. A comparison with various photocatalytic materials is carried out, and factors influencing photocatalytic performance are examined. The goal of this review is to present a thorough understanding of the possibilities and limitations of WO₃-based polymeric nanocomposites for photocatalytic applications.</p>