William Henry Cushing (August 21, 1852 – January 25, 1934) was a Canadian politician.
Born in Ontario, he migrated west as a young adult where he started a successful lumber company and later became Alberta's first Minister of Public Works and the 11th mayor of Calgary.
As Minister of Public Works in the government of Alexander Cameron Rutherford, he oversaw the creation of Alberta Government Telephones.
Cushing's resignation in 1910 precipitated the Alberta and Great Waterways Railway scandal, which forced Rutherford's resignation.
Though Cushing had hopes of being asked to replace Rutherford, that role fell instead to Arthur Sifton, the province's chief judge.
Left out of Sifton's cabinet, Cushing did not seek re-election in the 1913 election, and did not re-enter politics thereafter.
He was the chairman of Mount Royal College's board of governors for sixteen years.