The aim of the research is to elaborate the model of factors influencing competitiveness of the Latvian fisheries sector cluster. Based on the studied scientific literature, the research provides an improved definition of the sector competitiveness and defines the factors influencing the competitiveness of the sector. As a result of the analysis, the author has discovered that there are several internal and external social, economic, political and environmental factors that influence the competitiveness of the Latvian fisheries sector cluster. It is advisable to the institutions involved in fisheries policy-making to take into account the identified factors, influencing the competitiveness, and their changes when making and improving the general policy of the sector.