Economic growth and development is often contingent upon the growth and development of economic activities. In the light of the fact that business people are often concerned about their unlimited and personal responsibility for their economic activities, the decision to limit the liabilities of the economic system has led the states to support companies through which personal liabilities of businesspeople can be limited so that the obstacles to economic growth can be eliminated. One of these companies would be single-member companies, which emerged in the field of commercial law to bring about significant developments in the traditional laws of the said field (especially the contract theory of companies, and the unity of property and impossibility of its fragmentation law). Albeit these companies are new entities, they have attracted the attention of lawmakers in different countries, for they are significantly, economically beneficial. In this comparative research, we studied the origin of these companies and their position within legal systems.