Hermann Muller
Several people are named Hermann Muller or Hermann Müller:
- Hermann Müller (1829–1883), German botanist who investigated coevolution between bees and flowers. Name has umlaut.
- H.J. Muller (1890–1967), American geneticist who investigated mutations. Name has no umlaut.
- Hermann Müller (SPD) Foreign Minister of Germany, 21 June 1919–26 March 1920. SPD party.