Mohelnice nad Jizerou is a municipality and village in Mladá Boleslav District in the Central Bohemian Region of the Czech Republic.

Mohelnice nad Jizerou consists of two municipal parts (in brackets population according to the 2021 census):[2] The name was derived from the name of the Mohelka river, which was initially called Mohelnice.

It lies on the border between the Jičín Uplands and Jizera Table.

The main landmark of Mohelnice nad Jizerou is the Church of the Assumption of the Virgin Mary.

It is a tribune church, built in the Romanesque style in the mid-12th century.