Abstract: Fiber Reinforced Composite materials have an increased applications in recent days due to its enhanced structural properties and in turn mechanical and thermal properties. The heterogeneous nature of this kind of material makes complications in machining operation. However, drilling is a common machining practice for assembly of components. The quality of holes produced in Chopped Strand Mat Glass Fiber Reinforced Plastic (CSMat GFRP) material is severely affected by internal delamination besides with entry and exit delamination. The objective of the study was to apply the Taguchi methods to achieve an improved hole quality considering minimum delamination through proper selection of drilling parameters. A plan of experiments based on orthogonal main effect design has been used to get data for analysis. The signal to noise ratio and the analysis of variance are employed to investigate the drilling characteristics of CSMat GFRP material using high speed steel drills.