Al-Qadi is an Arabic surname. Notable people with the surname include:
Abd al-Majeed al-Qadi (born 1934), Yemeni playwright and writer Ahmad Ibn al-Qadi (1552/3–1616), Moroccan writer Ali Al Qadi (1988–2023), Palestinian senior Hamas commander Ayad Alkadhi (born 1971), Iraqi-American artist Ihsane El Kadi (born 1959), Algerian journalist Isam al-Qadi (died 2006), Palestinian politician Fayez Rashid Ahmed Hassan Al-Qadi Banihammad (1977–2001), Emirati hijacker of United Airlines Flight 175 as part of the September 11 attacks Farhan Al-Qadi, former hostage of Hamas Hassan Al Qadhi (born 1983), Qatari footballer Naif Al-Qadi (born 1979), Saudi footballer Salim Al-Kadi, Lebanese artist Tobías Ariel Cervera Cadi (Born 2002), Argentinian footballer Yasin al-Qadi (born 1955), Saudi businessman and terror suspect Qadi Ayyad (1083–1149), Imam and later judge of the Almoravid Empire