| Thorbjørn Berntsen | |
| Office: | Minister of the Environment |
| Term Start: | 3 November 1990 |
| Term End: | 17 October 1997 |
| Primeminister: | Gro Harlem Brundtland Thorbjørn Jagland |
| Predecessor: | Kristin Hille Valla |
| Successor: | Guro Fjellanger |
| Office2: | Member of the Storting |
| Term Start2: | 1 October 1977 |
| Term End2: | 30 September 1997 |
| Constituency2: | Oslo |
| Birth Date: | 13 April 1935 |
| Birth Place: | Aker municipality, Norway |
| Party: | Labour |
Thorbjørn Berntsen (born 13 April 1935) is a former Norwegian politician representing the Labour Party. He was Minister of the Environment from1990 to 1997. He was also a member of the Storting for Oslo from 1977 to 1997.[1]