kirchspielslandgemeinden eider is an "amt" ("collective municipality") in the district of dithmarschen, in schleswig-holstein, germany. its seat is in hennstedt. it was formed on 1 january 2008 from the former "ämter" kirchspielslandgemeinde hennstedt, kirchspielslandgemeinde lunden and kirchspielslandgemeinde tellingstedt. the "amt" is named after the eider river.