| Walter F. Hansen | |
| Office: | Mayor of Boise, Idaho |
| Term Start: | May 6, 1927 |
| Term End: | April 30, 1929 |
| Predecessor: | Herbert F. Lemp |
| Successor: | James P. Pope |
| Birth Date: | April 19, 1877 |
| Birth Place: | Denmark |
| Death Place: | Butte County, California, United States |
Walter Fritz Hansen (April 19, 1877 – November 8, 1965) was a Danish-born American politician who served as mayor of Boise, Idaho, from 1927 to 1929.
Hansen was appointed mayor to serve almost all of the two-year term of his predecessor Herbert F. Lemp, who died only four days after taking office.