Goal: The goal of this paper is to evaluate the knowledge of nurses from Zadar county about the consumption of dieatary fiber in comparison to the general population. The knowledge of nurses about the mentioned have a crucial role in health education and the enlightment of the general population, it contributes to a healthy diet and a healthy lifestyle, but also to disease prevention. The evaluation of knowledge in this field can contribute to improving of health programmes for nurses in the field of nutrition and diet therapy. Methods: 1096 examinees have participated in this cross- sectional study. The basic set has been stratified into two samples: the general population (727 examinees) and nurses (369 examinees). The study has been carried out in Dalmatia, from October 2014 to March 2015. A validated questionnaire of the Portuguese research centre Polytechnic Institute Viseu has been used. The questionnaire contains questions about demographic characteristics, eating habits, habits of analysing declarations, information sources, knowledge of dietary fiber and the connection between the input of fiber and disease occurence. By using descriptive and inferential statistics the consumption of dietary fiber in the Croatian population, as well as the level of knowledge of the nurses and the general population have been evaluated. Results: The intake of foods which are rich in dietary fiber in the Croatian population is relatively low. The examinees mostly consume one meal of vegetables and fruit per day. Women consume a larger amount of vegetables, fruit and whole grains and they analyse product declarations more often. Men usually consume fast food and meals outside their home. A positive connection between the level of education and good eating habits has been established. Inhabitants of urban areas consume a larger amount of fruit and whole grains, and they tend to analyse product declarations more often. The examinees receive information about dietary fiber mostly through the internet, then through television and printed media, but rarely through health institutions and radio. An equal level of knowledge about the composition, the required daily intake, the distribution and the health importance of dietary fiber has been established in the general population and the nurses. Statistically significant results partly appear in the context of better knowledge of the nurses, primarily those with a higher level of education, but a difference in the knowledge between the general population and the nurses hasn't been established. Conclusion: Eating habits concerning the intake of fruit, vegetables and whole grains do not completely match the recommendation, respectively they are below the recommended quantities. There is a positive connection between a higer level of education and eating habits, analysing of declaration, but also the consumption of fast food and meals outside the home, as well as a slightly higher level of knowledge about the health importance of dieatary fiber consumption. The nurses of Zadar County do not show better knowledge about the health importance of dieatary fiber consumption in relation to the general population. Because of the role of the nurses in health care, an evaluation of the educational programmes in the fields of nutrition and diet therapy is necessary