20th-century American Jews

Felix Gilbert (May 21, 1905 – February 14, 1991) was a German-born American historian of early modern and modern Europe.
Gilbert was born in Baden-Baden, Germany, to a middle-class Jewish family, and part of the Mendelssohn Bartholdy clan. In the latter half of the 1920s, Gilbert studied under Friedrich Meinecke at the University of Berlin. Gilbert's area of expertise was the Renaissance, especially the diplomatic history of the period He was a fellow of the Institute for Advanced Study in Princeton from 1962 to 1975, and maintained an active involvement as an emeritus faculty member until his death in 1991. He was elected to the American Academy of Arts and Sciences in 1963 and the American Philosophical Society in 1969.The main reading room of the German Historical Institute in Washington, D.C. is named in his honor.

Sig Arno (born Siegfried Aron; 27 December 1895 – 17 August 1975) was a German-Jewish film actor who appeared in such films as Pardon My Sarong and The Mummy's Hand. He may be best remembered from The Palm Beach Story (1942) as Toto, the nonsense-talking, mustachioed man who hopelessly pursues Mary Astor's Princess Centimillia.