Hajjaj (Arabic: حجاج, romanized: Ḥaǧǧāǧ or Ḥadjdjādj) may refer to:

• 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
• Sheikh Yusuf Abu el Hajjaj, patron of the Abu Haggag Mosque

• Hajjaj, Iran, a village in Semnan Province, Iran
• Abu Haggag Mosque

• Raef Haggag, full name of singer Raef
• Hajj (disambiguation)

This disambiguation page lists articles associated with the title Hajjaj.
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