This study investigates the performance of steel fiber-reinforced self-compacting concrete (SCC) with partial replacement of cement by marble dust, aiming to enhance both mechanical properties and sustainability. Self-compacting concrete, known for its high fluidity and ability to fill complex molds without external vibration, faces challenges related to the high consumption of cement, contributing to environmental concerns such as carbon emissions. To address these issues, marble dust, a by-product of the marble industry, is explored as a partial cement substitute, promoting sustainable waste management. Additionally, steel fibers are incorporated to improve the tensile strength, toughness, and crack resistance of the concrete.