al-Fiqh al-akbar, a theological treatise that was attributed to Abū Hanīfa and transmitted through Hammad b. Abī Hanīfa, received serious interest especially in the Ottoman period, ad many Ottoman scholars made commentaries, translations and poetic versions on the work, and even some commentaries were the subject of special studies. In addition, separate treatises were also written to examine and discuss some of the issues mentioned in the treatise, and literary traditions were formed. On the other hand, al-Fiqh al-akbar was referred to in the conflicts between some groups. This study will focus on the reasons why al-Fiqh al-akbar attracted such attention in the Ottoman scientific world, the areas of use of the work, will give information about the studies on the work and their original aspects, and will try to reveal the effects and reflections of Abu Hanifa’s theological heritage in the Ottoman World.