| Ketchum Graham | |
| Office1: | Ontario MPP |
| Term Start1: | 1867 |
| Term End1: | 1874 |
| Predecessor1: | Riding established |
| Successor1: | Thomas Wills |
| Constituency1: | Hastings West |
| Party: | Conservative |
| Birth Date: | 19 December 1831 |
| Birth Place: | Sidney Township, Upper Canada |
| Death Place: | Sidney Township, Ontario |
| Occupation: | Farmer |
Robert James Ketchum Graham (December 19, 1831 - March 9, 1889)[1] was a political figure from Ontario. He represented Hastings West in the Legislative Assembly of Ontario as a Conservative member from 1867 to 1874.
He was the son of a Scottish immigrant, James Graham. He served as reeve of Sidney Township from 1865 to 1867.