Goldbach may refer to:
- Streams
- Germany:
- Goldbach (Bode), a large stream in the Harz Mountains
- Places
- Germany:
- Goldbach, Bavaria, a municipality in Bavaria
- Goldbach, Thuringia, a municipality in Thuringia
- Goldbach (Crailsheim), a quarter of Crailsheim in Baden-Württemberg
- Switzerland:
- Goldbach, Hasle bei Burgdorf, part of Hasle bei Burgdorf, Canton of Berne
- Goldbach, Lützelflüh, part of Lützelflüh, Canton of Berne
- Goldbach, Zurich, part of Küsnacht, Canton of Zurich
- Mathematics
- Christian Goldbach, an 18th century Prussian mathematician
- Goldbach's conjecture, one of the oldest unsolved problems in number theory