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Aharon Katzenellenbogen (born 1893), one of the two principal founders of the Neturei Karta sect. •
Benita Katzenellenbogen (born 1945), American biologist •
Boris D. Bogen (1869–1929), born Katzenelenbogen, Russian-born Jewish-American educator and social worker •
Edwin Katzen-Ellenbogen or Katzenellenbogen (1882–after 1955), Austrian-Polish and American eugenicist and physician; Nazi collaborator in Buchenwald concentration camp •
Eyran Katsenelenbogen (born 1965), Israeli-born American jazz pianist •
Ezekiel Katzenellenbogen (about 1670–1749), Polish-German rabbi •
Gershon Ellenbogen (1917–2003), British barrister, author and Liberal Party politician (born Katzenellenbogen) •
John Katzenellenbogen (born 1944), American professor of chemistry •
Konrad Kellen (1913–2007), German-born American political scientist, intelligence analyst and author. (born Katzenellenbogen) •
Stephen M. Kellen (1914-2004), German-born investment banker (born Katzenellenbogen) •
Ludwig Katzenellenbogen (1877–1944), German brewery director •
Meir ben Isaac Katzenellenbogen (died 1565), Italian rabbi •
Ostap Ortwin (1876–1942), whose real name was Oskar Katzenellenbogen, Polish journalist and literary critic •
Samuel Judah Katzenellenbogen, Italian rabbi, son of Meir Katzenellenbogen •
Tamara Katsenelenbogen (1894–1976), Russian architect ==In popular culture==