•
Farhang-e Berahnegi va Berahnegi-e Farhangi (
Culture of Nudity and Nudity of Culture), Soroush, Tehran, 1981, translated into
Urdu,
Arabic, and
Turkish. •
Haj: Namaaz-e Bozorg (Hajj: the Grand Prayer), Sana, Tehran, 2000. •
Daaneshnaame-ye Jahaan-e Eslam (The
Encyclopaedia of the world of Islam),
Encyclopaedia Islamica Foundation, Volumes 2–6 (as supervisor), 1996–2001. • Textbooks on
sociology,
social science, Civil studies and
Qur'an, for high school and guidance schools. •
History & Histography, 2012 • ''Tafsir: Qur'anic Exegesis'', 2012 • ''Hawza-Yi 'Ilmiyya Shi'I Teaching Institution: An Entry from Encyclopaedia of the World of Islam'', 2012 •
Law: Selected Entries from Encyclopaedia of the World of Islam - Encyclopaedia of the World of Islam (EWI), 2013 •
Historians of the Islamic World, 2018 (Editor) •
Muslim Organisations in the Twentieth Century: Selected Entries from Encyclopaedia of the World of Islam, 2022 (Editor) •
Historical Sources of the Islamic World: Selected Entries from Encyclopaedia of the World of Islam - Encyclopaedia of the World of Islam (EWI), 2013 •
Sufism: An Entry from Encyclopaedia of the World of Islam, 2013
Translations • ''Tamhidaat: Moghaddame-i baraaye har Maa-ba'd-ot-tabi'e-ye Aayande ke be onvaan-e yek Elm Arze Shavad'', a translation of
Immanuel Kant's
Prolegomena to any Future Metaphysics, Iran University Press, Tehran, 1988. • ''Nazariye-ye Ma'refat dar Falsafe-ye Kaant'', a translation of Justus Hartnack's ''Kant's Theory of Knowledge'', Fekr-e Rooz, Tehran, 2000. •
Translation of Quran He translated
Quran to Persian. The translation of the Quran by him lasted for 9 years. He tried to use all new and old translations and consult with other scholars of the Quran during the translation. The book has been exhibited in the nineteenth international fair of the Quran in Iran. He tried to pave the way for a more easy understanding of the Quran for all. The translation of Quran according to Hadad is based on the conceptual translation. He pointed out that since many Persian people could not read very well Arabic language then he undertake the task. In 2019, he published a travelogue titled
I Went to the Desert and Found a Downpour of Love. Haddad-Adel describes his personal memories and experiences during the 2017
Arba'in trip in this book. Additionally, he provides a report on this spiritual journey, the emotions of those present at the annual ritual, and the mawkib keepers and organizers who host and assist those traveling to Imam Hussein's (AS) shrine in Karbala for the Arbaeen celebration. ==Awards and recognition==