Francis Gwynne Tudor (29 January 1866 – 10 January 1922) was an Australian politician who served as the leader of the Australian Labor Party from 1916 until his death.
He had previously been a government minister under Andrew Fisher and Billy Hughes.
Tudor was born in Melbourne to Welsh immigrant parents.
He left school at a young age to enter the workforce, serving an apprenticeship in the felt hat industry and later studying his trade for periods in England and the United States.
He became involved in trade unionism in England, and after returning to Australia served as president of the Felt Hatters' Union.
Tudor was elected president of the Victorian Trades Hall Council in 1900.
The following year, he was elected to the new federal parliament as a representative of the Labor Party.
He was chosen as the parliamentary party's first whip, and held that position until entering cabinet in 1908.
Tudor served as Minister for Trade and Customs from 1908 to 1909, 1910 to 1913, and 1914 to 1916, in the governments of Andrew Fisher and Billy Hughes.
He remained loyal to the Labor Party during the split over conscription in 1916, and was elected party leader after Hughes' expulsion.
He replaced Joseph Cook as leader of the opposition upon the formation of the third Hughes Ministry in February 1917.
Tudor led Labor to the 1917 and 1919 federal elections, on both occasions suffering heavy defeats.
His death in office at the age of 55 came after a long period of ill health.
He was the first leader of a major Australian political party to die in office, and was accorded a state funeral.