Samuel Klein may refer to: Samuel Klein (businessman) (1923–2014), founder of the Casas Bahia chain of stores in Brazil Samuel Klein (doctor), doctor and nutritional expert based at Washington University Samuel Klein (scholar) (1886–1940), historian and geography researcher of the Land of Israel Samuel Klein (1886–1942), founder of S. Klein department stores Sam Klein (soccer), Australian footballer Sam Klein, lead character in the Allan Levine series by the same name