Robert Edwy Ryerson was a Conservative member of the Canadian House of Commons.
He was born in Brant County, Canada West and became a grocer and merchant.
Ryerson attended public school at Brantford.
He became an associate manager of grocery firm Ryerson Brothers and served three terms as a Brantford alderman. He was first elected to Parliament at the Brantford City riding in the 1925 general election and re-elected there in 1926 and 1930. Ryerson was defeated in the 1935 federal election by William Ross Macdonald of the Liberal party.