Maritime transport is the most acceptable and cheapest type of transport through which over 80% of all goods in the world are transported. One of the branches of maritime transport is liner passenger shipping, which is extremely important for the Republic of Croatia due to the influx of guests from various countries during the tourist season who come to visit our many islands, and tourism is the main economic activity of Croatia. The aim of this paper is to show the importance of liner passenger shipping in Croatia and also its development, division and purpose. Ports that must be developed and able to meet the requirements placed on them are of great importance in liner passenger shipping, but also in shipping itself, so all the most important and most developed ports of the Republic of Croatia are analyzed in this paper. The paper will also describe the impact of the new situation with the Covid - 19 virus, which has affected the whole world, including the Republic of Croatia, with special reference to the decline in the transport of passengers and in the number of ships arrived in the Republic of Croatia. You will also get an insight into the impact of the Covid - 19 pandemic on the trade of goods in the five most important ports of the Republic of Croatia. Through the analysis of the data, it is concluded that the pandemic had a negative impact on the number of ships arrived and on transport of passengers, while on the transport of goods it had a positive or insignificant influence.