In the development of Latvia’s economy fish processing sector has always had a significant importance. It has not only ancient history and traditions, but also the ability to produce competitive products in the world market. The aim of the research is to evaluate the competitiveness of fish processing sector in Latvia. Based on the author developed Model of the Factors influencing Competitiveness of the Fisheries Sector Cluster and the Index of Fish Processing Sector Competitiveness the authors determined the competitiveness level of fish processing sector in Latvia and identified spheres influencing competitiveness, as well as the possibilities of further development. The methodology created by the author can use for the evaluate competitiveness of fish processing sector in any country. The elaborated methodology for evaluation of competitiveness may assist the institutions involved in the Fisheries' policy formation to work more successfully and improve the common policy in the Fisheries sector.