Comparative study has always had an important and attractive position in the humanities, especially in the science of law. Among the fruits of comparative study is finding common points and, on the other hand, eliminating possible weaknesses in domestic laws, and most importantly, moving towards establishing uniform criminal laws, especially for Islamic countries. Among the important topics that can be examined and analyzed comparatively is Islamic limits. The crime of adultery among Islamic sects, as one of the limits that was established by the holy law, has always been a subject of discussion and explanation. This brief article seeks to compare the views of the jurisprudence of the five Islamic schools of thought with the criminal laws of Iran and Egypt in the concept of the crime of adultery and its punishment. In this regard, a question arises as to whether the laws of Iran and Egypt in relation to the present issue are consistent with the positions and opinions of Islamic jurisprudence? It seems that both countries follow jurisprudential views in the principle of criminalization, but they differ in determining the type and amount of punishment and adherence to Sharia punishment or customary punishments.