Laufenburg is a municipality in the Swiss canton of Aargau. It is the seat of the district of the same name.
It has approximately 2000 inhabitants. On the other side of the Rhine River lies Laufenburg (Baden), Germany. The same name is not by accident, as the two used to be the same city. In the early 19th century Napoleon divided the city.
Two bridges now link both cities.
The old town of Laufenburg is listed as a heritage site of national significance. In 1985, Laufenburg received the Wakker Prize for the development and preservation of its architectural heritage.