Hadid was born into a Palestinian Muslim family in 1948 in Nazareth. He is the son of Anwar Mohamed Hadid (1918–1989) and his wife Khairiah Hadid (née Daher; 1925–2008), and has two brothers and five sisters. Through his mother, Hadid claims descent from Dahir al-Umar, an 18th-century Arab ruler of northern Palestine.