Subbiah Arunachalam (Arun) is an information consultant based in Madras (now renamed Chennai) in South India. He has been associated with the Indian academic and scholarly communities for over three decades.
He has been an editor of scientific journals (Indian Journal of Technology, Journal of Scientific & Industrial Research, Indian Journal of Chemistry, Proceedings of the Indian Academy of Sciences, and Pramana - Journal of Physics), a science writer, a researcher in chemistry, a teacher of information science, a librarian in a national laboratory, the executive secretary of the Indian Academy of Sciences, and a member of the editorial boards of scientific journals.

Currently he is a Distinguished Fellow in the M S Swaminathan Research Foundation and a part-time Visiting Professor in the Indian Institute of Technology, Chennai. His research interests include science on the periphery, scientometrics, and access to information.

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