Marijan Šunjić (Croatian pronunciation: [mârijaːn ʃǔːɲitɕ]) (born 5 April 1940 in Zagreb[1]) is a Croatian physicist, university professor, former rector of the University of Zagreb and a diplomat.
Between 1963 and 1970 he worked at the Ruđer Bošković Institute and in 1981 he became a professor at the Zagreb Faculty of Science.
Between 1983 and 1989 he was the head of the department for postgraduate studies in physics at the Faculty of Science.
[1] Šunjić held many posts in Croatian and international university associations and between 1990 and 1991 he held the post of assistant to the Croatian Science Minister Osman Muftić.
Šunjić then served as the Rector of the University of Zagreb for almost seven years between 25 April 1991 and 8 February 1998, and between 1998 and 2000 he was Croatia's ambassador to the Holy See.