The sensus communis imparts a priori and a posteriori, intellect and sensuality, intersubjectivity and intrasubjectivity. The study analyzes the meanings and functions of the term in Kant’s work as a whole, following Kant’s own classification of philosophy. It investigates the sensus communis logicus in the theoretical realm, the sensus communis aestheticus in the aesthetic realm, and the sensus communis practicus in the practical realm.