Horstedt is a municipality in the district of Rotenburg, in Lower Saxony, Germany. It is one of several communities that make up this district in the northwestern part of the country.
Lower Saxony is a federal state in northern Germany, and the Rotenburg district lies between the cities of Bremen, Hamburg and Hanover. Horstedt shares the name with at least one other place in Germany, but this article concerns the municipality in Rotenburg district.