Stephen Bonsal (March 29, 1865 - June 8, 1951) was a U.S. writer and diplomat from Baltimore, Maryland.
Bonsal was an international correspondent of the New York Herald (1885 - 1907), and the New York Times (1910 - 1911). He traveled extensively following the armies of many wars.
During World War I, Bonsal served in the American Expeditionary Forces doing psychological warfare. He was also President Woodrow Wilson's private translator during the peace negotiations in Paris.