Ernst Friedrich Ludwig Robert (or Robert-Tornow; 16 December 1778 – 5 July 1832) was a German dramatist.
He was born in Berlin as Liepmann Levin, into a well-off Jewish family, a brother of Rahel Varnhagen von Ense.
He wrote plays, including the tragedy Die Macht der Verhältnisse (1819) which deals with the position of Jews in society.