: Al-Faruqi's Theological Epistemology. This writing discusses the concept of tauhid theological epistimology incorporated as part of al-Faruqi's construction of Islamic studies. As a contemporary Muslim thinker, al-Faruqi maintains that tauhid is a substantial point in human's character building in various dimensions. As such, this gives rise to producing the dynamics of tauhid meanings in all aspects of life. This kind of tauhid essence has to be persued at the ontological and epis- temological conceptions. In order to explore such subtance, historical descriptive analysis approach is used so that the formulation of tauhid epistemology of al Faruqi could be known in detail throw light into the tauhid meanings in this life. The writer found that al-Faruqi's scientific paradigm at the level of applying tauhid could be observed through epistemological perspective. This study tries to formulate such epistemological analysis, hoping that it will enlighten human life based on the principles of Islamic creed or tauhid.