Ivan "Iko" Buljan (born 11 December 1949) is a Croatian football manager and former player who played as a defender.
He was a member of the Yugoslavia national team at the 1974 FIFA World Cup and UEFA Euro 1976.
Ethnically Croatian, he was capped for the Yugoslavia national team 36 times.
He reached the European Cup final 1979–80 with Hamburger SV where the club ultimately lost to Nottingham Forest.
Buljan started his career with local club NK Mračaj before moving to the first-league team Hajduk Split in 1967.