Mladenović (meaning "Son of Mladen") is a surname often found in Serbia and Croatia. It may refer to:

• Branko Mladenović, 14th century Serbian feudal lord, founder of the House of Branković
• Dragan Mladenović :
  • Dragan Mladenović (born 1956), Yugoslav handballer
  • Dragan Mladenović (born 1963), Yugoslav handballer, Kristina Mladenovic's father
  • Dragan Mladenović (born 1976), Serbian footballer
• Filip Mladenović (born 1991), Serbian footballer
• Kristina Mladenovic (born 1993), French tennis player
• Milan Mladenović (1958–1994), Serbian musician
• Mladen Mladenović (born 1964), Croatian footballer
• Nenad Mladenović (born 1976), Serbian footballer

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