Fredericia Municipality (Danish: Fredericia Kommune) is a kommune on the east coast of the Jutland peninsula in south-central Denmark. It belongs to the Region of Southern Denmark, covers an area of 134.46 km, and has a total population of 52,616 (2025). The Mayor is Steen Wrist, representing the Social Democrats political party.
The municipality's main town and the site of its municipal council is the city of Fredericia.
Fredericia (Danish pronunciation: [fʁeðɐˈʁetɕæ, fʁæðɐˈʁætɕæ]) is a town located in Fredericia Municipality in the southeastern part of the Jutland peninsula in Denmark. The city is part of the Triangle Region, which includes the neighbouring cities of Kolding and Vejle. It was founded in 1650 by Frederick III, after whom it was named.
The city itself has a population of 41,543 (1 January 2025) and the Fredericia Municipality has a population of 52,616 (2025).
The Triangle Region (Danish: Trekantområdet [ˈtʁeːkandˌɔmʁoðəd]) is a cooperation consisting of seven Danish municipalities on the Danish peninsula of Jutland and the island of Funen: Billund, Fredericia, Haderslev, Kolding, Middelfart, Vejen and Vejle. It is not an official administrative Region of Denmark.
The Triangle Region began as the general term for the industrial and communications hubs of Kolding, Vejle and Fredericia in the early 1960s. The three cities (thus ‘triangle’) originally worked together to coordinate and collaborate locally, but have since expanded into a cooperation between seven municipalities, which together have 421,480 inhabitants (as of 1 January 2018) and cover an area of 4,266.0 km².