In Roman jurisprudence, the concept similar to the Rule of Law was referred to as :

In Roman law, Jus Naturale (Natural Law) represented the ultimate system of justice based on rational principles and immutable moral cosmic order. This conceptualization laid the early philosophical foundation that limits arbitrary authority, closely mirroring the modern concept of the Rule of Law. Jus Civile refers to the civil law of Rome, Jus Gentium to the law of nations, and Lex Regia to the royal law defining imperial authority.