This is a list of 'mayors of St. John's, Newfoundland and Labrador.

Between 1888-1898 council consisted of five councillors elected by wards and two members appointed by the Newfoundland government. Then from 1898-1902 government by commission. In 1902, legislation passed that dictated a municipal council would be formed by six councillors-at-large and one mayor, elected by those citizens of St. John's who pay property taxes.

Mayors

• George Shea (June 19, 1902 to June 26, 1906)
• Michael Gibbs (June 26, 1906 to June 27, 1910)
• William Ellis (June 27, 1910 to July 1, 1914)
  • Commission of Government (July 1, 1914 to June 29, 1916)
• William Gosling (June 29, 1916 to December 15, 1921)
• Tasker Cook (December 15, 1921 to December 9, 1929)
• Charles Howlett (December 9, 1929 to March 31, 1932)
• Andrew Carnell (March 31, 1932 to November 8, 1949)
• Henry G. R. Mews (November 8, 1949 to December, 1965)
• William G. Adams (December, 1965 to November 13, 1973)
• Dorothy Wyatt (November 13, 1973 to November 3, 1981)
• John Joseph Murphy (November 3, 1981 to November 13, 1990)
• Suzanne "Shannie" Duff (November 13, 1990 to November 9, 1993)
• John Joseph Murphy (November 9, 1993 to September 30, 1997)
• Andy Wells (September 30, 1997 to March 3, 2008)
  • Dennis "Doc" O'Keefe (Acting) (March 3, 2008 to April 22, 2008)
  • Suzanne "Shannie" Duff (Acting) (April 22, 2008 to June 9, 2008)
• Dennis "Doc" O'Keefe (June 9, 2008 to Present)