| Robert Edwy Ryerson | |
| Birthname: | Robert Edwy Ryerson |
| Birth Date: | 1865 8, df=yes |
| Birth Place: | Brant County, Canada West |
| Spouse: | Elizabeth E. Dowling m. 21 August 1896[1] |
| Riding: | Brantford City |
| Predecessor: | riding created |
| Successor: | William Ross Macdonald |
| Term Start: | October 1925 |
| Term End: | October 1935 |
| Profession: | Grocer, merchant |
| Party: | Conservative |
Robert Edwy Ryerson (12 August 1865 - 12 October 1958) was a Conservative member of the House of Commons of Canada. 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.