Sardul Singh Guraya (1930–2012) was an Indian biologist, known for his contributions in the fields of reproductive physiology and Developmental biology. He was an elected fellow of the Indian National Science Academy, National Academy of Sciences, India and National Academy of Agricultural Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 1973, for his contributions to biological sciences.