Conjeevaram Srirangachari Seshadri [1]FRS (29 February 1932 – 17 July 2020) was an Indian mathematician.

[2] He was the founder and director-emeritus of the Chennai Mathematical Institute, and is known for his work in algebraic geometry.

He was also known for his collaboration with mathematician M. S. Narasimhan, for their proof of the Narasimhan–Seshadri theorem which proved the necessary conditions for stable vector bundles on a Riemann surface.

(Hons) degree in mathematics from Madras University in 1953 and was mentored by the Jesuit priest Fr.

His work with M S Narasimhan on unitary vector bundles and the Narasimhan–Seshadri theorem has influenced the field.