Trostberg (German pronunciation: [ˈtʁoːstˌbɛʁk]] ⓘ; Central Bavarian: Droschberg or Troschtberg) is a town in the district of Traunstein, in Bavaria, Germany.

About 1,400 people are employed at the Chemiepark Trostberg, a large chemical industrial area near the town.

The two main companies are AlzChem and BASF Bauchemie (construction chemistry).

[3] The Chemiepark Trostberg originated from a calcium cyanamide production plant, founded in 1908.

[4] During World War II, a subcamp of Dachau concentration camp was located in the town.