This paper questions the relevance of constitutional law in legal systems. Comparative constitutional law scholars have become used to the assumption that constitutional law is a universal point of reference which can be addressed in comparison. If comparative constitutional law is intended to refer to different constitutions, it will be necessary to check the relevance of the particular constitutional law first. Comparative constitutional studies have to develop criteria to address the relevance of constitutional law on the one hand and, on the other hand should be able to go beyond constitution and law to find the relevant comparative perspective.