Georg Anton Schäffer (rarely russified as Yegor Nikolayevich or Egor Antonovich Sheffer; von Schaeffer in Portuguese sources; 27 January 1779 – 1836) was a German physician in the employ of the Russian-American Company who attempted to conquer Hawaii for the Company and, ultimately, the Russian Empire. The bloodless Schäffer affair (1815–1817) or the Hawaiian spectacular, as it was called by contemporary Russians, became a significant financial blunder for the Company.