Wiethaus
Wiethaus is the family name of the following people:
- Carl Wiethaus (1809–1865), German lawyer and member of the Frankfurt National Assembly
- David Wiethaus (1768–1854), German administrative officer
- Julius Wiethaus (1806–1863), German district administrator and member of parliament
- Otto Wiethaus (1842–1918), German engineer, industrialist and politician