Rokytnice nad Jizerou (German: Rochlitz an der Iser) is a town in Semily District in the Liberec Region of the Czech Republic. It has about 2,600 inhabitants.
Rokytnice nad Jizerou is made up of town parts of Dolní Rokytnice and Horní Rokytnice, and villages of Františkov, Hleďsebe, Hranice, Rokytno and Studenov.
Rokytnice nad Jizerou was named after the Huťský stream, formerly called Rokytnice. The name Rokytnice refers to the old Czech word rokyta (meaning "willow") a common tree in the area.
Rokytnice nad Jizerou is a mountain resort in the west part of the Krkonoše. The municipal territory borders to Poland. The town is located in elongated valleys of Huťský stream between mountains massifs Stráž with an altitude of 782 metres (2,566 ft) and Lysá Hora with 1,344 metres (4,409 ft) and along the left bank of the river Jizera. The highest peak in the municipal territory is Sokolník with 1,384 metres (4,541 ft) on the border with Poland.
Rokytnice nad Jizerou was founded in 1574. The first inhabitants engaged in logging and metal mining (copper, lead and silver). The mining stopped paying off at the beginning of the 20th century and ceased. Other important economic activity was glasssmaking.
In winter, Rokytnice is also one of the most famous ski resorts in the Czech Republic, with many ski schools and 28 lifts. The dominant Lysá Hora has 8 lifts and 17 ski runs. The official ski runs in Rokytnice are the longest in the country.
Karel Maydl (1853–1903), Austrian surgeon
Franz Fühmann (1922–1984), German writer
Milan Jarý (born 1952), cross-country skier
Leona Neumannová (born 1987), volleyball player