The master's thesis covers a chronological and spatial historical overview of Hungary and Croatia, respectively their mutual relations from 1918 onward. Emphasis is made on the smaller part of present-day Croatia – Medjimurje. After the First and Second World War, Medjimurje was left to the occupation policy of Hungary, but in both cases, it managed to free itself from the occupier and join Croatia. After the Second World War, Hungary and Medjimurje were connected by the October revolutionary events in Hungary, since Medjimurje was one of the places where Hungarian refugees found their safe place. In 1992, Hungary was among the first to recognize the Republic of Croatia as an independent country. In the following years, Hungary and Croatia signed and agreed on various treaties. The two countries settled the issue of minorities and jointly embarked on the implementation of various projects, some of which are ongoing today, while regularly trying to solve any conflicts and disagreements.