Ralph Harman Booth (September 29, 1873 Toronto, Canada – June 20, 1931 Salzburg, Austria) was a non-career appointee who served as the American Envoy Extraordinary and Minister Plenipotentiary to Denmark (1930-1931). He died in office at the age of 57. His professional background was in banking and journalism, having been the Chicago Journal Secretary, Manager and Editor (1895-1904), Detroit Tribune, Cashier and Business Manager (1892-1904) and Vice President of the Associated Press, 1917-18. He began with Detroit National Bank, 1888.