Feldschlösschen (lit. 'small castle in the fields') is a Swiss beverage and brewing company located in Rheinfelden, in the German-speaking canton of Aargau, Switzerland. Founded in 1876, the company operates the biggest brewery in Switzerland by production, the Feldschlösschen Brewery. It bought out Cardinal in 1991, and became a division of Carlsberg in 2000. In addition to beer, it also produces non-alcoholic beverages and mineral waters. The following brands are produced:

Similarly named German brewer

Feldschlößchen (with the ß|eszett, ß) is the name of a brewer in Dresden, Germany, with no relation. See: Feldschlößchen (Dresden)