Haddeby is an Amt ("collective municipality") in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.
It is situated on the south bank of the Schlei, southeast of Schleswig.
It was named after the now ruined medieval trading settlement Hedeby.
The Amt Haddeby consists of the following municipalities (population in 2005 between brackets):
This Schleswig-Flensburg location article is a stub.