| Nils Weyer Arveschoug | |
| Birth Date: | 2 January 1807 |
| Birth Place: | Skoger, Norway |
| Death Place: | Molde, Norway |
| Citizenship: | Norway |
| Nationality: | Norwegian |
| Profession: | Politician |
| Office: | Governor of Romsdalen |
| Term Start: | 1853 |
| Term End: | 1893 |
| Predecessor: | Gudbrand Thesen |
| Successor: | Ludvig Arnoldus Leth |
| Office2: | Governor of Nordland |
| Term Start2: | 1848 |
| Term End2: | 1853 |
| Predecessor2: | Lars Bastian Ridder Stabell |
| Successor2: | Paul Peter Vilhelm Breder |
Nils Weyer Arveschoug (1807 - 1894) was a Norwegian lawyer and politician. He was the county governor of Nordlands amt from 1848 until 1853. He was then appointed to the post of county governor of Romsdals amt from 1853 until 1893, making him the longest-serving governor in history in Norway.[1]