Landowski or Landowsky (feminine Landowska, plural Landowscy) is a Polish surname.
Notable people with the surname include:Marcel Landowski, French composer
Paul Landowski (4 June 1875 – 27 March 1961), Polish-French monument sculptor
Klaus-Rüdiger Landowsky, German politician and manager, former member of city parliament in Berlin (West)
Wanda Landowska, Polish harpsichordist