Hermann Klein
Hermann Klein is the name of the following people:
- Hermann Klein (1805–1889), Hungarian journalist and translator, see János Kilényi
- Hermann Klein (politician) (1878–1960), German local politician, member of the Nassau Municipal Parliament
- Hermann Klein (railway worker) (1904 – after 1964), German railway official, President of the Mainz Federal Railway Directorate
- Hermann Klein (local history researcher) (1935–2016), German local history researcher
- Hermann Joseph Klein (1844–1914), German astronomer and meteorologist