| Type: | Amt |
| Kellinghausen | |
| Image Coa: | DEU Amt Kellinghusen COA.svg |
| Coordinates: | 53.95°N 52°W |
| Image Plan: | Amt Kellinghusen in IZ.png |
| Plantext: | Location of the Kellinghausen Amt within Steinburg district |
| State: | Schleswig-Holstein |
| District: | Steinburg |
| Area: | 195.74 |
| Gemeindeschlüssel: | 010615189 |
| Licence: | IZ |
| Divisions: | 19 municipalities |
| Website: | www.amt-kellinghausen.de |
| Mayor: | Clemens Preine |
| Bürgermeistertitel: | Amtsvorsteher |
Kellinghusen is an Amt ("collective municipality") in the district of Steinburg, in Schleswig-Holstein, Germany. Its seat is in Kellinghusen and in the Amt is situated the lesser-populated settlement of the nation, Wiedenborstel.
Before 1 January 2008, when it was joined by the (previously Amt-free) town Kellinghusen and the municipalities Hohenlockstedt and Lockstedt from the former Amt Hohenlockstedt, it was named Kellinghusen-Land.
The Amt Kellinghusen consists of the following municipalities (population in 2005 between brackets):