David Klein or Dave Klein may refer to:David Klein (1918–2005), American artist David Klein (businessman), American inventor of the Jelly Belly brand jelly bean David Klein, Dutch chess grandmaster David Klein (cinematographer), American cinematographer David Klein, American businessman David Klein (economist) (1935–2021), former governor of the Bank of Israel David Klein (footballer), French soccer player David Klein (mathematician), American professor of mathematics David Klein (ophthalmologist) (1908–1993), Swiss ophthalmologist