Arthur Charles Hardy, PC (December 3, 1872 – March 13, 1962) was a Canadian lawyer and politician.^[1]

Born in Brantford, Ontario, Hardy ran for the House of Commons of Canada in the Ontario riding of Leeds in the 1917 federal election.^[1] Although unsuccessful in that election, he was considered a powerful and influential figure within the Liberal Party.^[1]

In 1922, Hardy was called to the Senate of Canada representing the senatorial division of Leeds, Ontario.^[1] A Liberal, he served in the Senate for forty years until his death in 1962. In 1930, he was the Speaker of the Senate of Canada.^[1]

Hardy was a graduate of Osgoode Hall Law School,^[1] and he worked primarily as a lawyer.^[1] He was also an owner of radio station CHML in Hamilton,^[2] until the station was sold to Ken Soble in 1942.^[2] In 1938, he was appointed as a corporate director of Dominion Life.^[3]

Hardy was the son of Arthur Sturgis Hardy, who served as the fourth Premier of Ontario from 1896 to 1899.^[1] He married Dorothy Fulford, the daughter of Senator George Taylor Fulford.^[1]