Acquisition of Croatian citizenship by naturalization is a procedure that enables foreigners to become citizens of the Republic of Croatia. It is regulated by the Croatian Citizenship Act and contains exhaustive norms and conditions that individuals are obliged to fulfill in order to acquire the status of a citizen. The key conditions that must be met are legal residence in the country, at least 18 years of age and knowledge of the Croatian language and culture. The procedure begins with the submission of an application to the competent authority, which determines whether the candidate meets the prescribed conditions. For an individual, the procedure can be challenging and complex, as the candidate is expected to fully integrate into society and actively participate in the social and cultural life of the country. Acquiring Croatian citizenship through naturalization has significance in promoting understanding of different cultures and identities. A society that welcomes new citizens stimulates a climate in which diversity is valued and dialogue and unity are fostered. Despite the challenges, successful integration of the individual requires complementary cooperation and support from the individual and society. The Republic of Croatia, by encouraging naturalization, enriches society with fresh perspectives and contributions from its citizens, positively influencing its diversity and dynamics.