| Willis Keith Baldwin | |
| Constituency Mp: | Stanstead |
| Parliament: | Canadian |
| Predecessor: | Charles Henry Lovell |
| Successor: | John Thomas Hackett |
| Term Start: | 1917 |
| Term End: | 1930 |
| Birth Date: | 17 March 1857 |
| Birth Place: | Baldwin's Mills, Canada East |
| Party: | Liberal |
Willis Keith Baldwin (March 17, 1857 - April 19, 1935) was a Canadian politician and lumber merchant. He was elected to the House of Commons of Canada as a Member of the Laurier Liberals to represent the riding of Stanstead. He was re-elected as a Liberal in 1921 and again in 1925 and 1926.