John William Davis (April 13, 1873 – March 24, 1955) was an American politician, diplomat and lawyer. He served as a United States Representative from West Virginia from 1911 to 1913, then as Solicitor General of the United States and US Ambassador to the UK under President Woodrow Wilson. The culmination of his political career came when he ran for President in 1924 under the Democratic Party ticket, losing to Republican incumbent Calvin Coolidge.