Al-Jāmiʿah al-Ahliyyah Dār al-ʿUlūm Muʿīn al-Islām (Arabic: الجامعة الأهلية دار العلوم معين الإسلام), popularly known as the Hāṭhazārī Madrasah (Bengali: হাটহাজারী মাদ্রাসা) or the Great Madrasah (Bengali: বড় মাদ্রাসা, romanized: Boṛo Madraśa), is a Qawmi institution of Hathazari, located in Bangladesh's Chittagong District.

[7][8] According to a 2009 National Bureau of Asian Research report, the highly reputed institution ranks among top ten madrasah in the subcontinent.

[12] The Darul Ulum has divided its education system into six major levels:[citation needed] The "Boro Madrassah" is one of the three large madrasahs, along with Al-Jamiah Al-Islamiah in Patiya, and Jamiatul Uloom Al-Islamia Lalkhan Bazar, that together control over 7000 smaller schools in Bangladesh.

[10] The rector of the school, Maulana Ahmad Shafi—popularly known as "Boro Huzur" (the eldest scholar)—is also the chairman of a faction of the political party Islami Oikya Jote.

[13] Critics of the party say that membership of IOJ coincides with the Harkat-ul-Jihad al-Islami (HuJI), though a leading Bangladeshi political scientist warns little is actually known about their organisation.