| Rasmus Theisen | |
| Birth Date: | 1837 9, df=y |
| Birth Place: | Spind, Norway |
| Death Place: | Norway |
| Citizenship: | Norway |
| Nationality: | Norwegian |
| Profession: | Politician |
| Office: | Governor of Nordland |
| Term Start: | 1890 |
| Term End: | 1908 |
| Predecessor: | Otto Benjamin Andreas Aubert |
| Successor: | Anton Omholt |
Rasmus Theisen (1837–1908) was a Norwegian civil servant and politician. From 1875 to 1877, he was the mayor of the town of Bodø in Norway. Later, he served as the County Governor of Nordland county from 1890 until his death in 1908.[1]