Der Nister (Yiddish: דער נסתּר ֹor דער ניסטער‎, "the hidden one"; 1 November 1884 – 4 June 1950 the Soviet Gulag) was the pseudonym of Pinchus Kahanovich (פּנחס קאַהאַנאָוויטש), a Yiddish author, philosopher, translator, and critic.