Until now, there has been no research that specifically examines the Bab Al-Qawa'id as a legal product that can be categorized as a constitution. However, Bab Al-Qawa'id in its development is often referred to as a constitution in various articles, journals, media and so on. The question is whether the Bab Al-Qawa'id Kingdom of Siak Sri Indrapura can be categorized as a constitution? In fact, t…