Who was the President of the United States in 1927?

John Calvin Coolidge Jr. was the President of the United States in 1927. Calvin Coolidge (born July 4, 1872 in Plymouth, Vermont; died January 5, 1933 in Northampton, Massachussetts) succeeded Warren G. Harding as the thirtieth President of the United States, serving between August 2, 1923 and March 4, 1929, including the whole of 1927.