| Austin Walker | |
| Office: | Mayor of Boise, Idaho |
| Term Start: | May 11, 1942 |
| Term End: | October 31, 1945 |
| Predecessor: | H. W. Whillock |
| Successor: | Sam S. Griffin |
| Birth Date: | January 5, 1883[1] |
| Birth Place: | Gary, Minnesota, United States |
| Death Place: | Boise, Idaho, United States |
Austin Walker (January 5, 1883 – October 31, 1945) served as mayor of Boise, Idaho, from 1942 to 1945.
Walker had served as acting mayor since February 1942 as the incumbent, H. W. Whillock, was a United States Navy officer during World War II. Walker was appointed mayor after Whillock formally resigned in May of that year. He was elected in his own right in 1943.
Walker died in October 1945 and was succeeded by Sam S. Griffin.