Rangasami Lakshminarayan Kashyap (born 28 March 1938 - died 11 November 2022) was an Indian applied mathematician and a Professor of Electrical Engineering at Purdue University. He developed (with Harvard professor Yu-Chi Ho) the , an important result (algorithm) in pattern recognition. He is a Fellow of the Institute of Electrical and Electronics Engineers, the International Association for Pattern Recognition, and the Indian Institute of Electronic and Telecommunication Engineers.