Klausner is a surname, and may refer to:
Abraham Klausner (Austrian rabbi), 14th-century rabbi Joseph Klausner (1874–1958), Jewish scholar Ida Klausner, maiden name of Ida Roland (1881–1951), Austrian and German actress Hubert Klausner (1892–1939), Austrian politician Margot Klausner (1905–1975), German-Israeli writer and filmmaker Abraham Klausner (1915–2007), Jewish United States Army captain and chaplain Amos Klausner, birth name of Amos Oz (1939–2018), Israeli writer and novelist. R. Gary Klausner (born 1941), American federal judge. Richard Klausner (born 1950s), American scientist Harriet Klausner (1952–2015), American book reviewer Michael Klausner (born 1954), American scholar. Laura Janner-Klausner (born 1963), British rabbi Julie Klausner (born 1978), American comedian Josh Klausner, American screenwriter Howard Klausner, American filmmaker and writer Judah Klausner, American composer and inventor