Friedrich Matthaei
Friedrich Matthaei or Friedrich Matthäi is the name of the following personalities:
- Friedrich Anton Levin Matthaei (1774 – around 1840), German teacher, clergyman and writer
- Friedrich Matthäi (painter) (1777–1845), German portrait and history painter
- Friedrich Matthäi (politician) (1822–1891), Hessian mill owner and state politician
- Friedrich Matthaei (gynecologist) (1865–1930), German gynecologist