Blažić (Cyrillic script: Блажић) or Blažič is a South Slavic surname, derived from the masculine first name Blaž, a form of the name Blaise. It may refer to:
Antun Blažić (1916–1943), Croatian Jewish Partisan Borka Jerman Blažič, Slovenian computer scientist and internet pioneer Branislav Blažić (1957–2020), Serbian surgeon and politician Dragoljub Blažić (1936–1991). Yugoslav footballer Larisa Blazic (born 1970), British video installation artist and academic Jaka Blažič (born 1990), Slovenian basketball player Marko Blažić (born 1999), Croatian water polo player Marko Blažić (born 1985), Serbian footballer Miha Blažič (born 1980), Slovenian musician and songwriter, known by the stage name N'toko Miha Blažič (born 1993), Slovenian footballer Milena Mileva Blažić (born 1956), Slovenian literary historian and professor Sergio Blažić (1951–1987), Croatian hard rock musician Srđan Blažić (born 1982), Montenegrin football player Uroš Blažić (born 2002), prime suspect for the 2023 Mladenovac and Smederevo shootings Viktor Blažič (1928–2014), Slovenian journalist, essayist, translator and former anti-Communist dissident