Diaa () is an Arabic male given name.
Notable people with this name include: Ahmed Diaa Eddine (1912–1976), Egyptian film director Diaa al-Din Dawoud (1926–2011), Egyptian politician Diaa Raofat (born 1988), Egyptian footballer Diaa Rashwan (born 1960), Egyptian journalist Karim Diaa Eddine, Egyptian director Diaa al-Awady, Egyptian physician Diaa Jubaili, Iraqi novelist Diaa Eddine Mechid, Algerian footballer
See also DIAA, Delaware Interscholastic Athletic Association Diya (disambiguation)