This paper’s topic is the process of Croatian national integration in the city of Dubrovnik. Nation is a term that does not have only one definition. It can be generally defined as a large group of people who share the feeling of common identity. For this paper, especially relevant is the theory of nation whose author is Miroslav Hroch, who differentiates big and small nations. In order to form a big nation, a country must have its own ruling class, whose members share ethnic identity with people in that country. On the other hand, in countries under foreign rule, small nations are formed. Croatian nation was formed as a small nation, since the process of its formation began when Croatian lands were under Habsburg rule. For over four centuries, Dubrovnik was a part of Republic of Ragusa, independent state with its own ruling class. Thus, one could have expected forming of particular, Dubrovnik nation, but that did not happen. One reason is the fact that nations are a product of modern society, which in Dubrovnik was not formed until the downfall of Republic. The other reason is the Croatian ethnic consciousness among the people of Dubrovnik. Therefore, Dubrovnik became involved in the process of Croatian national integration. According to Hroch’s model, that process can be divided into three phases. Still, centuries of independence helped to create a certain particularism among the people of Dubrovnik, which was relevant in the process of national integration. It was especially visible in the ideology of Serb-Catholic movement, which was the main ideological opponent of Croatian national ideology in Dubrovnik.