Hajdú

Hajdú and Hajdu may refer to:

• Hajdu, mercenary soldiers in 16th- and 17th-century Hungary
• Hajdú (county), a historical county in the Kingdom of Hungary
• Hajdú-Bihar, a modern county in eastern Hungary
• Hajdu–Cheney syndrome, an extremely rare genetic disorder of the connective tissue
• Hajdú, a surname:
  • Andre Hajdu (1932–2016), Israeli composer born in Hungary
  • David Hajdu (born 1955), American columnist
  • Étienne Hajdú (1907–1996), Transylvania-born French sculptor
  • Georg Hajdu (born 1960), German composer and music theorist
  • Markéta Hajdu (born 1974), Czech hammer thrower
  • Patty Hajdu (born 1966), Canadian politician