Mladen Mladenovic (born 13 September 1964, in Rijeka) is a former Croatian football player in midfielder role.
During his career (1982–1998) he played for NK Rijeka, NK Zadar, NK Dinamo Zagreb and HNK Hajduk Split, in Spain for CD Castellón, in Austria with SV Austria Salzburg, and in Japan J1 League with Gamba Osaka.
He won 19 international caps for Croatia from 1990 to 1996, also participating at Euro 1996.
Following his retirement from professional football, Mladenovic started a career as a referee as well as a manager.
Since 2002, he managed NK Žminj, HNK Rijeka, NK Halubjan, NK Cres and NK Orijent.