Valentine Ratz (November 12, 1848 – March 1, 1924) was a Canadian lumber merchant and politician in the province of Ontario.

[1] Born in St. Jacobs, County of Waterloo, Canada West,[1] the son of Jacob Ratz, Ratz received his education at Pine Hill Public School.

As a lumber merchant, he was President of the South River Lumber Company of Parry Sound District.

[3] He was first elected to the House of Commons of Canada for the electoral district of Middlesex North in the general election of 1896.

He was summoned to the Senate of Canada for the senatorial division of Parkhill, Ontario on the advice of Prime Minister Wilfrid Laurier in 1909.