The Dunajec is a river running through northeastern Slovakia and southern Poland. It is also regarded as the main river of Goralscyzna. It is a right tributary of the Vistula River. It begins in Nowy Targ at the junction of two short mountain rivers, Czarny Dunajec and Biały Dunajec (Black and White Dunajec). Dunajec forms the border between Poland and Slovakia for 17 kilometers in the Pieniny Środkowe (Slovak: Centrálne Pieniny) range, east of the Czorsztyn reservoir.
The Dunajec is 249 kilometers long, including its source river Czarny Dunajec.
