| J. Ralph Kirk | |
| Birthname: | James Ralph Kirk |
| Birth Date: | 1895 11, df=yes |
| Birth Place: | Antigonish, Nova Scotia, Canada |
| Riding: | Antigonish—Guysborough |
| Predecessor: | William Duff |
| Successor: | Angus Ronald Macdonald |
| Term Start: | March 1936 |
| Term End: | June 1957 |
| Profession: | merchant |
| Party: | Liberal |
James Ralph Kirk (14 November 1895 – 6 November 1963) was a Liberal party member of the House of Commons of Canada. He was born in Antigonish, Nova Scotia and became a merchant by career.
Kirk was first elected to Parliament at the Antigonish—Guysborough riding in a by-election on 16 March 1936 then re-elected for full terms there in 1940, 1945, 1949 and 1953. Kirk was defeated in the 1957 election by Angus Ronald Macdonald of the Progressive Conservative party.