Achterwehr is a municipality, located in the district of Rendsburg-Eckernförde in the German Bundesland of Schleswig-Holstein.

Achterwehr
Municipality
Fire station in Achterwehr
Coat of arms
Location of Achterwehr within Rendsburg-Eckernförde district
Achterwehr Show map of Germany Achterwehr Show map of Schleswig-Holstein
Coordinates: 54°19′N 9°58′E / 54.317°N 9.967°E / 54.317; 9.967
Country	Germany
State	Schleswig-Holstein
District	Rendsburg-Eckernförde
Municipal assoc.	Achterwehr
Government
• Mayor	Anne Katrin Kittmann (SPD)
Area
• Total	15.65 km2 (6.04 sq mi)
Elevation	29 m (95 ft)
Population  (2022-12-31)[1]
• Total	1,029
• Density	66/km2 (170/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal codes	24239
Dialling codes	04340
Vehicle registration	RD
Website	www.amtachterwehr.de

Achterwehr is situated 12 km west of Kiel and about 5 km south of the Kiel Canal (German: Nord-Ostsee-Kanal). The Autobahn 210 from Kiel to Rendsburg passes to the north of Achterwehr, and the river Eider crosses it.

Achterwehr is the seat of the Amt ("collective municipality") Achterwehr.