Ranjan Roy (b. 1948 in Secundrabad, India) is Professor of Mathematics and Computer Science at Beloit College, Beloit, Wisconsin.
Roy has published many papers on differential equations, fluid mechanics, special functions, Fuchsian groups, and the history of mathematics. He is coauthor of the well-known book Special Functions (with G. E. Andrews and R. Askey), published by Cambridge University Press in 1999.
Roy is coauthor of the following DLMF chapters
Roy served as a Validator for the original release and publication in May 2010 of the NIST Digital Library of Mathematical Functions and the NIST Handbook of Mathematical Functions.