Karlsberg may refer to:
Karlsberg Brewery (since 1878, alias Karlsbräu), in Homburg, Saarland, Germany Karlsberg Castle (1778–1793), a ruin in Homburg, Saarland, Germany Karlsberg Hill, near the German city of Homburg, Saarland Karlsberg, the German name for Gura-Putnei, a community of Zipser Germans now within Putna, Suceava county, Romania
See also Carlsberg Burgruine Karlsberg, a castle in Carinthia, Austria