Trust is an essential element for the functioning not only of ancient societies but also of modern societies. This article explores the different dimensions of trust in general and the different dimensions of the relationship between trust and the law, in particular. More specifically, we distinguish three different levels of interaction between trust and the law: (1) trust in the law; (2) trust through the operation of law, and (3) trust as defined by the law. Building on these categories, we finally turn to the “tsunami of regulation” (“Regulierungstsunami”) in the area of EU financial market law that has occurred in the wake of the financial crisis of 2008. As will be shown, trust can serve as a legal concept for making sense of this flood of legislative acts and of shaping these into a coherent framework. A different question yet to be answered is whether the flood of legislation already resulted in providing for an excess level of trust.