| George Robert Armstrong | |
| Office: | Mayor of Omaha |
| Term Start: | March 2, 1858 |
| Term End: | 1859 |
| Predecessor: | Clinton Briggs |
| Successor: | Benjamin Eli Barnet Kennedy |
| Birth Date: | 1 August 1819 |
| Death Place: | Omaha, Nebraska |
| Nationality: | American |
| Occupation: | Politician |
George Robert Armstrong (August 1, 1819 – April 20, 1896) was a pioneer mayor of Omaha, Nebraska. He served as the interim Mayor of Omaha from 1858 to 1859 after Andrew Jackson Poppleton resigned, and was elected in 1861, only to resign in 1862.[1]