Fredericia 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.

Fredericia Municipality 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 km2, and has a total population of 52,173 (2023). The Mayor is Steen Wrist, representing the Social Democrats political party.