| John Alexander Wallace | |
| Term Start: | 1921 |
| Term End: | 1925 |
| Predecessor: | William Andrew Charlton |
| Successor: | William Horace Taylor |
| Birth Date: | April 3, 1881 |
| Birth Place: | Simcoe, Ontario, Canada |
| Death Date: | October 13, 1961 |
| Profession: | Engineer farmer |
| Party: | Laurier Liberals (1917–1921) Progressive (1921–1945) Co-operative Commonwealth Federation (1945) |
| Riding: | Norfolk |
John Alexander Wallace (April 3, 1881 – October 13, 1961) was a Canadian politician, engineer and farmer.
Wallace was born in Simcoe, Ontario, Canada. He was elected in 1921 to the House of Commons of Canada as a Member of the Progressive Party in the riding of Norfolk. He was previously defeated in the 1917 election as a Member of Laurier's Liberals and in 1945 as a Member of the Co-operative Commonwealth Federation.