Schlesinger is a German surname meaning "from Silesia" (German: Schlesien) and may refer to:
Adam Schlesinger (born 1967), American composer and musician
Adolf Martin Schlesinger (1769–1838), German founder of A.M. Schlesingers Musikhandlung
Alan Schlesinger (born 1960), American politician and Republican candidate for the U.S. Senate in Connecticut in 2006
Alice Schlesinger (born 1988), Israeli Olympic judoka
Arthur Meier Schlesinger, Sr. (1888–1965), American historian and professor at Harvard University
Arthur Meier Schlesinger, Jr. (1917–2007), son of the above, American historian, social critic and former John F. Kennedy associate
Bruno Schlesinger (1876–1962), American German-born conductor and composer who changed his name to "Bruno Walter" in 1911
Carl Schlesinger (1813–1871), Austrian cellist
Christina Schlesinger, American artist
Cory Schlesinger (born 1972), American football player
David Schlesinger (born 1960), American journalist who is the Editor-in-Chief of Reuters
Don Schlesinger, American gaming mathematician, author, lecturer and famous blackjack player
Elyakim Schlesinger, English rabbi
Frank Schlesinger (1871–1943), American astronomer
Hermann Irving Schlesinger (1882–1960), American chemist
Iliza Shlesinger (born 1983), American comedian
James R. Schlesinger (1929–2014), U.S. Secretary of Defense (1973–1974) and first Secretary of Energy (1977-1979)
Joe Schlesinger (born 1928), Canadian television journalist and author
John Schlesinger (1926–2003), British film director
Katharine Schlesinger, British actress
Kathleen Schlesinger, British musicologist (1862 Holywood near Belfast - 1953 London)
Klaus Schlesinger (1937–2001), German writer and winner of the 2000 Erich Fried Prize
Leon Schlesinger (1884–1949), American Looney Tunes producer
Ludwig Schlesinger (1864–1933), Hungarian-German mathematician
Rudolf B. Schlesinger (professor) (1901–1969), Scottish Marxist theoritician and sovietologist of the University of Glasgow
Rudolf Schlesinger (1909–1996), German-born Professor of Comparative Law at Cornell University, Director of the Cornell Common Core Project
Walter Schlesinger (1908–1984), German historian
Things that are named after people with this surname:
Leon Schlesinger Productions, the 1933 founding name of The Warner Bros. animation division, named after Leon Schlesinger
Schlesinger (crater), a lunar impact crater on the far side of the Moon
Schlesinger Building, a skyscraper in Braamfontein, Johannesburg, South Africa
Schlesinger institute, Research institute for Jewish medical ethics, named after Falk Schlesinger M.D.
Schlesinger Library, a research library at the Radcliffe Institute for Advanced Study, Harvard University, named after Arthur M. Schlesinger, Sr.