Karrharde (North Frisian: Kårhiird; Danish: Kær Herred) was an amt (collective municipality) in the district of Nordfriesland, in Schleswig-Holstein, Germany. It was situated on the border with Denmark, approx. 35 km north of Husum, and 25 km west of Flensburg. Its seat was in Leck, itself not part of the amt.