| Claus Nieuwejaar Worsøe | |
| Birth Date: | 21 August 1822 |
| Birth Place: | Bergen, Norway |
| Death Place: | Kristiania, Norway |
| Citizenship: | Norway |
| Nationality: | Norwegian |
| Spouse: | Frederikke Olava Jacobine Trampe |
| Profession: | Politician |
| Office: | Governor of Søndre Bergenhus amt |
| Term Start: | 1878 |
| Term End: | 1897 |
| Predecessor: | Niels Mathias Rye |
| Successor: | Hroar Olsen |
| Office2: | Governor of Nordland |
| Term Start2: | 1867 |
| Term End2: | 1878 |
| Predecessor2: | Carsten Smith |
| Successor2: | Otto Benjamin Andreas Aubert |
Claus Nieuwejaar Worsøe (1822-1906) was a Norwegian civil servant and politician. He served as the County Governor of Nordland county from 1867 until 1878. In 1878, he was appointed to serve as the County Governor of Søndre Bergenhus county until his retirement in 1897.[1]