Hungary–Slovakia border

The Danube ( ; see also other names) is a river in Europe, the second-longest after the Volga in Russia. It flows through Central and Southeastern Europe, from the Black Forest of Germany south through the Danube Delta in Romania into the Black Sea. A large and historically important river, it was once a frontier of the Roman Empire. In the 21st century, it connects ten European countries, running through their territories or marking a border. Originating in Germany, the Danube flows southeast for , passing through or bordering Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Mo

The Tisza, Tysa or Tisa (see below) is one of the major rivers of Central and Eastern Europe. It was once called "the most Hungarian river" because it flowed entirely within the territory of the Kingdom of Hungary. Today, it crosses several national borders.

The Ipeľ (Slovak; ) or Ipoly (Hungarian) (German: Eipel, archaic Slovak: Jupoľ, Latin: Bolia) is a long river in Slovakia and Hungary, a tributary of the Danube River. Its source is in central Slovakia in the Slovak Ore Mountains. It flows south to the Hungarian border and the Slovakia-Hungary border, and then southwest, west, and again south along the border until it flows into the Danube near Szob.

Abaújvár is a village in northeastern Hungary, next to the Slovak border. It lies northeast of Miskolc, and 18 km south of Košice (Kassa), Slovakia.

divides the territories of Hungary and Slovakia

Nagy-Mack-Milic (; ) is the highest peak of the Hungarian part of the Zemplén Mountains, which is part of the Carpathian Mountains. The mountain is situated on the border of Hungary and Slovakia. It is 894 metres (2,933 ft) high and lies near the northernmost point of Hungary.