The sustainable management of Glass Fiber Reinforced Polymer (GFRP) waste is a critical environmental concern. Thisexperimental study explores the feasibility of incorporating waste GFRP powder as a partial cement replacement in concrete tomitigate landfill accumulation. Concrete specimens were prepared with GFRP substitutions ranging from 5% to 30% by weight ofcement, and their workability, compressive, and split tensile strengths were assessed. A 5% replacement exhibited improvements inworkability and compressive strength, while higher substitutions resulted in a decrease in compressive strength. However, a 20%replacement yielded an optimum balance between these properties. The split tensile strength demonstrated an increase withincreasing GFRP content, indicating that the fibrous nature of GFRP contributes to enhanced mechanical characteristics, includingflexural strength. While GFRP waste holds potential as a sustainable concrete constituent, further research into long-termperformance is warranted.Keywords: Concrete, GFRP waste powder, Cement replacement, Compressive strength, Split tensile strength, Flexural strength,Sustainability.