The introduction of electronic register systems for all spheres of state functioning is becoming more widespread in developed countries. It is the systems, not individual registers, that create the conditions for the comprehensive and effective use of available information in the field of state and local government, research, business planning, and so on. In our opinion, health care registries are the most important among other systems, so it is important to study the experience of the most developed countries in the field of creating electronic medical information resources. The use of the experience gained by advanced European countries in this area is especially useful for Ukraine, where such a system is being developed. The purpose of the article is to summarize the experience of Northern European countries in the use of electronic information resources of health care for its implementation in Ukraine. The novelty of the article is a generalized and comparative analysis of health registry systems in Denmark, Norway, the Netherlands, Estonia, Sweden, Finland and a study of the role of medical, statistical and scientific institutions in the development of these systems. The research methodology is based on the application of the following methods: system analysis, scientific generalization, comparative analysis, research methods of complex systems. The article examines the health care systems of six northern European countries, compares the composition and features of these systems. The focus is on electronic information resources, which are introduced only in some countries. It is established that the Danish and Norwegian systems are the most branched among the systems of other studied countries and contain not only a larger number of specialized registers, but also have the largest number of organizations that maintain these registers. The holders of registers and databases in different countries are not only the relevant ministries but also research institutes and universities. In addition, statistical authorities also create registers that are used for society’s statistical information needs. The study thus summarizes the experience of creating and operating electronic information resources in the field of health care in Northern European countries, concludes that it can be used in the implementation of a similar Ukrainian, the process of which began several years ago.