| Lewis Menary | |
| Birth Date: | 1882 10, df=yes |
| Birth Place: | Amaranth Township, Ontario |
| Spouse: | Lucy May Taylor m. 13 April 1910[1] |
| Riding: | Wellington North |
| Predecessor: | John Knox Blair |
| Successor: | Arnold Darroch |
| Term Start: | June 1945 |
| Term End: | June 1949 |
| Profession: | farmer, merchant |
| Party: | Progressive Conservative |
Lewis Menary (8 October 1882 - 24 April 1956) was a Progressive Conservative party member of the House of Commons of Canada. He was born in Amaranth Township, Ontario and became a farmer and merchant by career. Menary served as reeve of Grand Valley in 1910 and 1911.
He was first elected to Parliament at the Wellington North riding in the 1945 general election after an unsuccessful attempt there in the 1940 election. Menary was defeated in the 1949 election by Arnold Darroch of the Liberal Party.