The subject of the research is the theoretical, methodological and practical basis for studying the impact of the institutional environment on the efficiency of export-oriented production of enterprises in the agricultural sector of the economy and the activation of their foreign economic activities in the European agricultural market. The purpose of the work is to develop theoretical foundations and practical recommendations for the implementation of an effective system of institutional support for the activation of export activities of agricultural enterprises in the European development vector. Methodological basis of the article is general scientific methods of theoretical and empirical research, special methods of scientific knowledge. To conduct the research, the following methods were used: dialectical, economic-statistical, balance, normative, economic-mathematical, economic comparisons, grouping, graphic, system-structural analysis and synthesis. Results of work. The article examines the impact of the institutional environment on the development of export-oriented activities of domestic agricultural enterprises in the conditions of deepening the European integration process. The author suggests measures of an institutional and organizational-economic nature aimed at strengthening the export potential of enterprises of the agricultural and food complex and increasing their competitiveness in the common market of agricultural products of the EU member States. The field of application of results. The results and conclusions can be used in the development of a strategy for entering the European market of agricultural products for enterprises of the agricultural and food complex, training specialists in the field of international economic relations and foreign trade. Conclusions. Analysis of the current state of export-oriented activities of Ukrainian enterprises in the agricultural sector of the economy indicates the need for structural and institutional transformation of the system of organization of foreign economic activity of economic entities. In the context of the deepening of the European integration process, the functioning of enterprises in the agricultural sector of the economy is significantly affected by the internal and external institutional and market environment. Accordingly, this is reflected in the economic indicators of their activities and the competitiveness of Ukrainian agricultural products in the European market. Institutional conditions and factors that slow down the entry of Ukrainian agricultural enterprises to the European market are the following: imperfection of the national system of land market relations, lack of effective institutions of ownership and land use; inefficient structural and institutional policy of the state in the agricultural sphere; low level of institutional support, stimulation and regulation of export-oriented activities of agricultural enterprises; non-compliance of domestic agricultural and food products with European requirements and standards; imperfect quality control system for production, storage, transportation of food products, etc.