Bálazs Hajdú (born May 27, 1975 in Budapest) is a retired Hungarian sailor who specialized in the Finn class. He has been selected to compete for Hungary in two editions of the Olympic Games (2000 and 2004), and has been a resident athlete for 15 years at the Hungarian Training Center (Hungarian: Magyar Testgyakorlók Köre in Budapest, under the tutelage of his longtime coach György Wossala. Hajdu made his first Hungarian team, as a 25-year-old yachtsman, at the 2000 Summer Olympics in Sydney, where he finished fifteenth in the Finn class with a grade of 102.