Wollastonite is one of the inorganic fillers. wollastonite reinforced recycled ABS (Acrylonitrile butadiene styrene) composites were studied. Powder-based wollastonite with a particle size of 13 microns was mixed with recycled Acrylonitrile butadiene styrene in various proportions of wt.%. Twin-screw extruder is used for compounding. Mechanical properties like Flexural strength and flexural modulus as per ASTM D790 was carried out and the results were compared with recycled ABS. It was found that the recycled ABS with 10%,20%,30%,40% of wollastonite has improved the Flexural modulus and as well as fall in flexural strength. Key Words: Calcium silicate, flexural properties, recycled ABS, Wollastonite, composites, injection moulding, plastic waste management.