The entrepreneurial legal entities of Private Law are the most operative and comfortable form of modern business. These legal entities formеd during the special period. The science has not got concept of nature and classification of forms of these legal entities. Therefore, the changes of the social and economic conditions require to make types of these legal entities. As a result, modern science needs the comparative analysis of the current legislation of foreign countries. The processes of the integration of the forms of entrepreneurial legal entities of Private Law need additional the basic summarizing categories — the categories of second level (types). These categories are the result of different criteria of classification and are the basic of separate legal forms of legal entities. The construction of legal entities is the type, which includes a lot of forms of the entrepreneurial legal entities of Private Law. The comparative analysis of the current legislation of foreign countries became basis for forming of a few types of entrepreneurial legal entities of Private Law: companies; cooperatives; legal entities that belong to the entrepreneurial on the basis of maintenance of the activity (these legal entities distribute a profit between participants). It is established, that the complex legal adjusting of the   entrepreneurial legal entities of Private Law have included a few such types. This mechanism will provide plugging in the single system of all forms of the entrepreneurial legal entities of Private Law. The problems of legal adjusting of the entrepreneurial legal entities of Private Law in the Civil Code of Ukraine should have been solved.