The Old City of Dubrovnik, located in the south of Croatia, is part of the rich cultural heritage of the Republic of Croatia. Despite numerous earthquakes and fires that destroyed part of the historical buildings, Dubrovnik is still recognized today as one of the most beautiful and unique cities in the Mediterranean. After the 1979 earthquake with the epicenter in Montenegro, the Old City of Dubrovnik was included in the UNESCO World Heritage List in order to increase attention to the restoration and preservation of the cultural-historical heritage. The Church of the Holy Savior, located in the old city center of Dubrovnik, was built after the earthquake in 1520 as a sign of gratitude that the city was not completely destroyed. The aim of the diploma thesis is the seismic analysis of the Church of the Holy Savior after the earthquake with the epicenter in Montenegro in 1979 and the elastic response spectra of return periods of 95, 225 and 475 years. To carry out seismic evaluation of the church, a spatial structural model was created in the computer program SCIA Engineer. The obtained vibration periods of the structural model coincide with the vibrations obtained from in-situ tests of the research project IP-2020-02-3531 "Assessment of the seismic risk of cultural heritage buildings in Croatia - SeisRICHerCRO" of the Croatian Science Foundation. This work can be considered as a starting point for more complex calculations and analyzes of the Church of the Holy Savior in Dubrovnik.