| Ernest G. Eagleson | |
| Office: | Mayor of Boise, Idaho |
| Term Start: | April 28, 1919 |
| Term End: | April 7, 1921 |
| Predecessor: | S. H. Hays |
| Successor: | Eugene B. Sherman |
| Office2: | Mayor of Boise, Idaho |
| Term Start2: | May 5, 1925 |
| Term End2: | May 2, 1927 |
| Predecessor2: | Eugene B. Sherman |
| Successor2: | Herbert F. Lemp |
| Birth Date: | January 13, 1864[1] |
| Birth Place: | Cadiz, Ohio, United States |
| Death Place: | Boise, Idaho, United States |
Ernest G. Eagleson (January 13, 1864 - August 17, 1956) was an American politician who served two nonconsecutive terms as mayor of Boise, Idaho, in the 1910s and 1920s.