Otto Eisenschiml, Austrian-American chemist and author (d. 1963)

Otto Eisenschiml (June 16, 1880 – December 7, 1963) was an Austrian-born chemist and industrial executive in the American oil industry, and a controversial author. He may be best known for his provocative 1937 book on the assassination of Abraham Lincoln in which he proposed that a senior member of Lincoln's Cabinet orchestrated the plot to kill the president.