Self-compacting concrete (SCC) is considered one of the recent developments in concrete technology. It is characterized by its ability to flow, spread, and fill formwork, including narrow spaces and areas between reinforcing bars, without the need for mechanical vibration. This type of concrete has gained increasing attention in the construction industry due to its ability to improve construction quality and reduce the time and effort required during concrete placement. With the growing interest in environmental sustainability, the use of sustainable and recycled materials in the production of self-compacting concrete has become an important direction in modern engineering research. This study aims to evaluate the effect of using sustainable materials in the production of self-compacting concrete on its mechanical properties. This is achieved by incorporating alternative and environmentally friendly materials, such as recycled glass powder, fly ash, silica fume, and limestone powder, at different percentages into concrete mixtures. Several concrete mixtures are prepared while maintaining certain basic variables to determine the influence of these materials on concrete performance and compare the results with those of a conventional reference mixture. The study focuses on evaluating compressive strength, splitting tensile strength, and flexural strength. In addition, the fresh properties of self-compacting concrete are investigated through tests such as the slump flow test, V-funnel test, and L-box test. These tests are conducted to assess the concrete's ability to flow and pass through reinforcing bars without segregation or bleeding. The nature and proportions of sustainable materials have a direct influence on the properties of self-compacting concrete. Some fine materials, such as silica fume and limestone powder, may contribute to improving mixture cohesion and reducing internal voids, while fly ash can help improve workability and flowability. Furthermore, using recycled glass powder may reduce cement consumption and minimize waste generation. However, its replacement percentage must be carefully controlled to avoid potential negative effects on strength or harmful reactions, such as the alkali-silica reaction (ASR). The expected results may help identify the optimum proportions of sustainable materials that achieve a balance between workability, mechanical strength, and durability. The appropriate combination of these materials may also improve certain concrete properties while reducing the environmental impact associated with cement production and the consumption of natural resources. The significance of this study lies in developing self-compacting concrete that combines good structural performance with environmental sustainability by reducing the consumption of conventional materials and utilizing industrial waste and recycled materials. It may also contribute to supporting sustainable construction practices and improving resource efficiency in engineering projects. In conclusion, the use of sustainable materials in the production of self-compacting concrete represents an important approach toward developing more efficient and environmentally friendly construction materials. Evaluating the effects of these materials on mechanical properties and fresh concrete characteristics is an essential step toward achieving concrete mixtures that satisfy both structural performance and sustainability requirements.