The relations with the King of Bohemia George of Poděbrady were a key factor in the foreign policy of Mathias Corvinus from the beginning of his reign. Initially correct and close relations between Mathias and George became later more changeable as a result of the momentary interests of the monarchs. Their relations gradually became more complicated and cooler, finally leading to open conflict in 1468. The diplomatic ties between the kingdoms of Hungary and Bohemia in the period 1465 – 1469 are the subject of the present study. At this time the territory of the Kingdom of Bohemia was at the intersection of the interests of various European powers. Apart from Mathias Corvinus, the Holy Roman Emperor Frederick III, King Kazimír IV of Poland from the Jagiello dynasty, the Pope and various German dukes from the Wittelsbach and Hohenzollern dynasties were involved in Czech affairs. Apart from describing the relations between the Hungarian and Czech monarchs, the paper aims to put their steps into the context of international affairs in this period.