The textile industry faces a growing challenge due to the massive generation of textile waste, driven by the rise of fast fashion and the consequent obsolescence of garments. This issue results in significant environmental impact, with alarming accumulation in landfills. In response to this crisis, this study explores the integration of textile waste into construction material production, presenting an innovative solution for the sustainable management of these discards. As an initial exploratory feasibility study, we investigated the incorporation of textile waste into mortars prepared with CEM III/A 42.5 N/SRC cement. Rigorous experimental tests were conducted to evaluate how the inclusion of this waste affects the physical and mechanical properties, as well as the overall performance of the mortar. Additionally, this work addresses the environmental impact of the textile industry and discusses key strategies to promote the circular economy and reduce waste generation at the source. The findings of this research aim not only to offer a sustainable pathway for the valorization of textile waste but also to contribute to the development of more efficient construction materials with a reduced carbon footprint. This approach represents a promising step towards mitigating the textile waste problem and fostering a more circular future in both the textile and construction industries.