This study examines the use of waste plastics in geopolymer bricks as a way to reduce environmental pollution from plastic waste. Various mixtures of waste plastic, fly ash, sand and stone chips were used to create brick samples. The samples were then tested for properties like water absorption, efflorescence, hardness, soundness and compressive strength. Results showed that compressive strength increased with higher plastic content, up to a maximum of 27.2 MPa for a 15% plastic mixture. Using waste plastic in bricks provides benefits like cost reduction, waste reduction, and decreases environmental pollution compared to traditional bricks. Further research aims to optimize plastic content and minimize issues like reduced strength at high temperatures.