Schmidtgen
Schmidtgen is the family name of the following people:
- Carl Christian Leberecht Schmidtgen (1796–1866) German singer, conductor and composer
- Johanna Schmidtgen (1814–1850), German opera singer (soprano)
- Otto Schmidtgen (paleontologist) (1879–1938), German paleontologist
- Otto Schmidtgen (musician) (1911–1964), German musician
- Paul Schmidtgen (1882–1969), German pharmacist and chemist