Hajjaj ( or ), also sometimes spelled Haggag or Haggiag, may refer to:
People Al-Hajjaj ibn Yusuf (661-714), military governor of the Umayyad caliphate Emad Hajjaj, Palestinian-Jordanian editorial cartoonist Al-Ḥajjāj ibn Yūsuf ibn Maṭar (786-833), translated Euclid's Elements into Arabic Al-Hajjaj ibn Ustadh Hurmuz (d. 1009), Buyid general and governor Muslim ibn al-Hajjaj, Islamic author of Hadith Yusuf Abu al-Haggag, patron of the Abu Haggag Mosque
Places Hajjaj, Iran, a village in Semnan Province, Iran Abu Haggag Mosque
See also Raef Haggag, full name of singer Raef Hajj (disambiguation)