The present research work is to study the effect of low and medium strain rates on tensile behavior of epoxy and glass/epoxy composites. The digital image correlation (DIC) technique is employed for evaluating full-field strain contour plots using high-speed CMOS camera, which captures about 100,000 frames per second. Stress-strain measurements are reported for epoxy and glass/epoxy composites for strain rates ranging from 0.0001 - 450 s-1 and the variation of modulus, strength and strain to failure with strain rate is studied. A non-linear regression function is used to predict the tensile properties of epoxy and glass/epoxy composites at both low and medium strain rates regimes. The results reveal that the tensile strength and modulus increases with increase in strain rate for epoxy and glass/epoxy composites. The fracture surfaces of tensile specimens are investigated using scanning electron microscopy (SEM) to understand the influence of strain rate on fracture morphology. © 2017 The Authors.