| Walter Frank Foy | |
| Birth Date: | 31 December 1908 |
| Birth Place: | Peterborough, Ontario, Canada |
| Riding: | Lambton West |
| Term Start: | June 1962 |
| Term End: | April 1968 |
| Profession: | life insurance underwriter |
| Party: | Liberal |
Walter Frank Foy (31 December 1908 – 2 December 1993) was a Liberal party member of the House of Commons of Canada. He was born in Peterborough, Ontario, and became a life insurance underwriter by career.
He was first elected at the Lambton West riding in the 1962 general election by a slim margin of four votes, then re-elected there in 1963 and 1965. In 1968, Foy left federal politics after completing his term in the 27th Canadian Parliament and did not seek further re-election.