Theodora Anna Mathilde Julie Rosenquist (8 May 1896 – 26 July 1959), known as Thea Rosenquist, was a German stage and film actress. She acted in several Austrian silent films, and was considered a replacement for Liane Haid. She married industrialist Leon Joseph Koerner (or Körner) in 1923, and settled down in Vienna and Prague. Rosenquist was of Jewish origin and had to escape following the Nazi takeovers of Austria and Czechoslovakia. She went to the Netherlands, on to Britain before finally settling down in Canada. Several of her family members were killed in the Holocaust.