Horstsee
Horstsee stands for:
- Horstsee (Bramsche) , quarry pond near Bramsche , Lower Saxony
- Horstsee (Stade) , former clay pit in the Hohentorsvorstadt of Stade, Lower Saxony
- a pre- dam of the Döllnitzsee dam near Wermsdorf in the district of North Saxony, Saxony