Tourism and winemaking have been linked since ancient times. Top wines have always attracted significant numbers of gastro tourists. The modern world has only strengthened this connection by adding the possibility of production and marketing of ecologically produced wines in combination with the traditional gastronomic offer of a certain area. Given the lack of research into the impact of eco wine production in boutique wineries on tourism, it is crucial to present all the relevant theoretical determinants of this area. The main goal of the research is to determine the influence of the production of organic wines through boutique wineries on wine tourism and tourist offer in the Republic of Croatia. The methods used to collect data and information are primary (semi-structured interviews) and secondary (relevant literature and winery documentation). The results of the research show that since ancient times there has been a continuity in the development of winemaking in the Republic of Croatia, which changes according to climatic, technological and other conditions. Also, the development of winemaking has significantly expanded and enriched the tourist offer in the Republic of Croatia, especially when it comes to ecologically produced wines, whose offer is constantly increasing, therefore it is expected that the offer will expand and more production and their placement on the market through tourism. The results of this research contribute to the identification of business opportunities in tourism, and with the extension of the research to tourists and wine tourism participants, they can result in significant progress in the creation of the tourist offer of the Republic of Croatia.