Horace Stanley Colliver (February 10, 1874[1] – December 16, 1957) was a businessman and political figure in Ontario.
He represented Prince Edward in the Legislative Assembly of Ontario from 1923 to 1926 and from 1928 to 1934 as a Conservative member.
He was born in Hallowell township, the son of George Colliver and Belle Spafford, and was educated in Cherry Valley.
Colliver served as warden for Prince Edward County in 1914 and as mayor of Picton in 1918.
AS a Conservative candidate he took just 17 more votes than the incumbent UFO MPP Parliament to win the seat.