| Hermann Berthelsen | |
| Office: | Mayor of Sisimiut |
| Term Start: | 2010 |
| Successor2: | Malik Berthelsen |
| Office2: | Mayor of Qeqqata |
| Term Start2: | 1999 |
| Term End2: | 2018 |
| Birth Date: | 2 March 1956 |
| Birth Place: | Sisimiut, Qeqqata, Greenland |
| Occupation: | Politician |
| Citizenship: | Kingdom of Denmark |
| Nationality: | Greenlandic |
| Party: | Siumut |
| Residence: | Sisimiut, Qeqqata, Greenland |
Hermann Berthelsen (born 2 March 1956) is a Greenlandic politician and affiliated with the Siumut party. As of July 2010, Berthelsen is the mayor of Sisimiut,[1] [2] a town in central-western Greenland, and the administrative center of the Qeqqata municipality.[3]