Hewitt Bostock (May 31 1864-April 28 1930) was a Canadian publisher, businessman and politician.

He was born in Walton Heath, Epsom, England and studied at Trinity College, Cambridge graduating with honours in mathematics. Bostock then studied law and was called to the bar in 1888. Rather than begin a legal practice he toured North America, Australia, New Zealand, China and Japan before settling in British Columbia in 1893 starting a ranch and lumber company.

He founded the Province newspaper and then entered politics winning election to the Canadian House of Commons as a Liberal in the 1896 Canadian election.

In 1904 he was appointed to the Canadian Senate by Sir Wilfrid Laurier. A decade later he became Leader of the Opposition in the Canadian Senate. Bostock broke with the Laurier Liberals over the Conscription Crisis of 1917 and became a Liberal-Unionist campaigning in favour of the Union government of Sir Robert Borden during the 1917 Canadian election.

Following World War I, Bostock reconciled with the Liberals and, in 1921, became Minister of Public Works in the Liberal government of William Lyon Mackenzie King. Several months later, in 1922, he became Speaker of the Canadian Senate and held the position until his death in 1930. In 1925 he served as a member of the Canadian delegation to the Assembly of the League of Nations.