Brugg (sometimes written as Brugg AG in order to distinguish it from other Bruggs) is a Swiss municipality and a town in the canton of Aargau and is the seat of the district of the same name. The town is located at the confluence of the Aare , Reuss, and Limmat, with the Aare flowing through its medieval part. It is located approximately 16 kilometers (9.9 mi) from the cantonal capital of Aarau ; 28 kilometers (17 mi) from Zürich; and about 45 kilometers (28 mi) from Basel .

Brugg is the Swiss German term for bridge (German: Brücke). This is an allusion to the purpose of the medieval town's establishment under the Habsburgs, as the town is located at the narrowest point on the Aare in the Swiss midlands. The Habsburgs’ oldest known residence is located in the neighborhood of Altenburg, which had previously been an independent community.