This is the first time a National Integrity System Assessment (NIS‐study) has been carried out in Norway. The purpose of the study is to promote awareness of the risk of corruption, vulnerability and risk management within important institutions in society. The overall assessment is that Norway’s integrity systems function well. All pillars achieve a total score of 82 or higher, which has to be considered as very good. However, even though the pillars score well or very well in terms of points, the study also uncovers weaknesses within most of the pillars. Some weaknesses are to be found in the legislation, while others are linked to practice. The extent and the severity of the weaknesses vary.