| 46th Iowa Infantry Regiment | |
|---|---|
 Iowa state flag | |
| Active | June 10, 1864, to September 23, 1864 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
The 46th Iowa Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It was among scores of regiments that were raised in the summer of 1864 as Hundred Days Men, an effort to augment existing manpower for an all-out push to end the war within 100 days.