The impact of tourism on the economy of the Republic of Croatia is the main objective of this thesis. Today, tourism is a relatively young economic sector compared to other economic sectors, but due to the rapid growth it is experiencing today, it is becoming one of the dominant economic sectors for many countries, including the Republic of Croatia. The tourism sector accounts for up to one-fifth of GDP in the Republic of Croatia and is also the sector on which the state relies the most. Croatia's success in tourism is due to its geographical location and the natural factors on which tourism is based, namely sun and sea. The speed and dynamics of changes in the desires and needs of tourists is the reason for the emergence of a diverse tourist offer and the development of various forms of tourism. Croatia, as a predominantly receptive country, bases its offer on: Attractions, tourism, accommodation and general infrastructure, products and human resources. On the other hand, demand depends on the arrival of foreign tourists, mainly from neighbouring countries such as Germany, Slovenia, Austria, Italy and other EU countries. Foreign tourists account for about 90% of overnight stays, based on data from the last four tourist seasons. At the very end of the document, data are presented showing the impact of tourism on GDP, employment and its vulnerability to external influences, using the example of the pandemic COVID -19.