| Summary: | As a promising organic semiconducting material, polymeric graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) has attracted much attention due to its excellent optical and photoelectrochemical properties, thermal stability, chemical inertness, nontoxicity, abundance, and low cost. Its advantageous visible light-induced photocatalytic activity has already been beneficially used in the fields of environmental remediation, biological applications, healthcare, energy conversion and storage, and fuel production. Despite the recognized potential of g-C<sub>3</sub>N<sub>4</sub>, there is still a knowledge gap in the application of g-C<sub>3</sub>N<sub>4</sub> in the field of textiles, with no published reviews on the g-C<sub>3</sub>N<sub>4</sub>-functionalization of textile materials. Therefore, this review article aims to provide a critical overview of recent advances in the surface and bulk modification of textile fibres by g-C<sub>3</sub>N<sub>4</sub> and its composites to tailor photocatalytic self-cleaning, antibacterial, and flame retardant properties as well as to create a textile catalytic platform for water disinfection, the removal of various organic pollutants from water, and selective organic transformations. This paper highlights the possibilities of producing g-C<sub>3</sub>N<sub>4</sub>-functionalized textile substrates and suggests some future prospects for this research area.
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