The monograph reveals the most important and demanded by legal science and practice issues of constitutional law: the concept of constitutional law as the leading branch of Russian law, the place and role of the Constitution of the Russian Federation in the system of sources of Russian law, the institution of the foundations of constitutional law (on the example of the constitutional system of the Republic of Kazakhstan), and some others The scientific publication is intended for undergraduate and graduate students undergoing training in the direction of training "Jurisprudence" . It will also be useful for graduate students, teachers of public law disciplines, applicants, doctoral students of law departments, law enforcement officers and everyone interested in jurisprudence ..