Nenad Prelog was born in Zagreb in 1948, where he finished grammar school and graduated from the university in sociology and philosophy. He obtained his master degree from the University of Michigan (Ann Arbor) in the field of environmental protection, and the doctorate from the University of Zagreb (Faculty of Political Science - thesis: Information aspects of environment management). He worked as a journalist (editor and chief editor of "Omladinski tjednik", "Byte" magazine etc.), he established INDOK center for the protection of man’s environment which he led from 1973-1979.

He held the position of director of the Referral Centre of the University of Zagreb (1980-1981), Head of the postgraduate studies in information science (1986-1994). From 1990-2000 he was an assistant to the director of Leksikografski zavod "Miroslav Krleža" (Lexicographic Institute “Miroslav Krleža”), scientific advisor and full professor of information science at the Faculty of Political Science in Zagreb and at the University of Zadar. From 2000 he has been an assistant to the Minister of Exterior, and from 2003-2006 ambassador of the Republic of Croatia in Ireland. He is an author of some ten books and fifty scientific papers and reports in the field of theory of and applied information technology.

He is a founder and a long-term president of the Croatian-American Society and the Croatian Society for Promotion of IT Literacy. He is a founder and president of InMed. He received numerous awards (Plaque for development of information science, Charter for the environmental protection, Award of the City of Zagreb etc.).