| Austin Edwin Dewar | |
| Birth Date: | 1912 4, df=yes |
| Birth Place: | Indian Head, Saskatchewan, Canada |
| Death Place: | Indian Head, Saskatchewan, Canada |
| Spouse: | Mildred N. Bjorndahl m. 29 June 1940[1] |
| Riding: | Qu'Appelle |
| Predecessor: | Gladys Strum |
| Successor: | Henry Mang |
| Term Start: | June 1949 |
| Term End: | June 1953 |
| Profession: | agent, contractor, farmer, grain merchant, hotelier |
| Party: | Liberal |
Austin Edwin Dewar (24 April 1912 - 15 December 1985) was a Liberal party member of the House of Commons of Canada. He was born in Indian Head, Saskatchewan and became an insurance agent, contractor, farmer, grain merchant and hotelier by career.
He was first elected to Parliament at the Qu'Appelle riding in the 1949 general election. After serving in the 21st Canadian Parliament, Dewar did not seek another federal term in the 1953 election.