Petra Dizdar (born 30 June 1984) is a Croatian former professional tennis player.
Dizdar, a native of Split, qualified for her only WTA Tour singles main draw at the 2003 Croatian Bol Ladies Open and fell in the first round to the third-seeded Vera Zvonareva. She played collegiate tennis for the University of Texas, where she was named Big 12 Freshman of the Year in 2004 and earned All-Big 12 selection three times as a singles player.