The subject of this research is the similarities and differences between the contract forms developed by the international nongovernmental organizations for application in the sphere of investment construction activity (contracts terms for engineering, procurement, construction/ for turnkey projects, second edition of 2017, developed by the International Federation of Consulting Engineers (FIDIC), framework “turnkey” contract for large projects, first edition of 2007, developed by the International Chamber of Commerce (ICC)) and the norms of national civil legislation (Parts I and II of the Civil Code of the Russian Federation) that regulate unilateral termination of construction contracts. The novelty of this research lies in conducting a comparative analysis of Russian legislation and contract forms developed by the international nongovernmental organizations. The examination of foreign experience in the sphere of legal regulation of termination of contract are based on analysis of the norms of contract law of the national legal systems of foreign countries. However, according to the foreign authors, contract law within the systems of both, general and continental law, was developing in seclusion, without substantial influence of one national system upon another. International influence upon the national contract law emerged relatively recently in the sphere of foreign economic activity. At the same time, the key factor for mutual enrichment of the national systems of contract law became the use of international contract forms, which contributed to the unification of contractual regulation of the relations of obligation in national jurisdictions. Their influence upon the development of contract law was far more substantial than even the development of international conventions with substantive law regulations.