Sophie Tieck (28 February 1775 – 1 October 1833), later known as Sophie Bernhardi or Sophie von Knorring, was a German Romantic writer and poet. Her role as a writer of the Romantic period was overshadowed by her brother Ludwig and her first husband. She was only really appreciated as an important writer when her letters were published in the 1960s. A plot twist in her brother's story Eckbert the Blond is an unattributed invention by Sophie Tieck.