| Thor-Øistein Endsjø | |
| Birth Date: | 1 May 1936 |
| Birth Place: | Akershus, Norway |
| Sport: | Sports shooting |
| Show-Medals: | yes |
Thor-Øistein Endsjø (1 May 1936 - 9 August 2024) was a Norwegian physician and former sports shooter.
He competed in the 25 metre pistol event at the 1972 Summer Olympics.[1] As a physician he worked at private clinics in Oslo and Bærum, include Humana which he co-established in Sandvika. He was the team physician for Norway in five Olympic Games and been associated with the Norwegian Athletics Association and several other sports federations. He resided at Blommenholm.[2]