Nordstormarn is an Amt ("collective municipality") in the district of Stormarn, in Schleswig-Holstein, Germany. It is situated around Reinfeld, which is the seat of the Amt, but not part of it.The Amt Nordstormarn consists of the following municipalities:Badendorf Barnitz Feldhorst Hamberge Heidekamp Heilshoop Klein Wesenberg Mönkhagen Rehhorst Wesenberg Westerau Zarpen