Jesenice (pronounced [jɛsɛˈniːtsɛ] ( listen); German: Assling) is a town in the Municipality of Jesenice in Slovenia, on the Slovenian side of the Karawanks, bordering Austria to the north. It is the seat of the municipality. It is known as the home of Slovenia's largest steel company, Acroni, and the hockey club it sponsors, Acroni Jesenice. The town's name derives from the ash tree (Slovene: jêsen), which once grew in abundance locally. The history of Jesenice is closely connected with that of its ironworks and metallurgy industries, which until recently were driving force of the town's development in practically all areas.
Jesenice is presently undergoing massive urban reconstruction with the help of EU resources. A new city centre is being built in the former industrial heart of the town, where almost all of the 1950s steelmill buildings have been demolished. Two shopping malls have already been built, as well as a new city hall. Current projects include rebuilding some old parts of town and improvements to sports facilities, as well as another high school.