Martin Klein
Martin Klein is the name of the following people:
- Martin Klein (actor) (1846–1924), Austro-Hungarian theater actor
- Martin Klein (wrestler) (1884–1947), Estonian wrestler
- Martin Klein (author) (* 1962), German author
- Martin Klein (cook) (* 1976), French cook
- Martin Klein (musician) (* 1983), Austrian songwriter and pianist
- Martin J. Klein (1924–2009), American physicist and historian of science
